Former President George H.W. Bush, seated, waves as fellow former Presidents Bill Clinton, right, George W. Bush, and Jim Carter begin to walk off stage during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

A video message from President Donald Trump is played on the stage during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Former President Barack Obama, speaks as fellow former Presidents, from left, Jimmy Carter, George H.W. Bush, George W. Bush, and Bill Clinton look on during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Lady Gaga performs during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Lady Gaga performs during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Lady Gaga performs during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

The Texas A&M choir sings during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents, Democrats Barack Obama, Bill Clinton and Jimmy Carter and Republicans George H.W. and George W. Bush, joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Former Presidents from right, Barack Obama, Bill Clinton, George W. Bush, George H.W. Bush and Jimmy Carter gather on stage during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Former President George W. Bush, center, speaks as fellow former Presidents from right, Barack Obama, Bill Clinton, George H.W. Bush and Jimmy Carter look on during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Sam Moore walks on stage to perform during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents, Democrats Barack Obama, Bill Clinton and Jimmy Carter and Republicans George H.W. and George W. Bush, joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Larry Gatlin, center, performs during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Lady Gaga sings during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents, Jimmy Carter, George H.W. Bush, Bill Clinton, George W. Bush and Barack Obama, joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Lady Gaga performs during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents, Jimmy Carter, George H.W. Bush, Bill Clinton, George W. Bush and Barack Obama, joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Lady Gaga performs during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents, Jimmy Carter, George H.W. Bush, Bill Clinton, George W. Bush and Barack Obama, joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

A video message from President Donald Trump is played on the stage during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents, Jimmy Carter, George H.W. Bush, Bill Clinton, George W. Bush and Barack Obama, joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

A sound check is conducted before a concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents will be attending the concert Saturday night, raising money for relief efforts from hurricane devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

The Texas A&M choir sings the national anthem during a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents, Jimmy Carter, George H.W. Bush, Bill Clinton, George W. Bush and Barack Obama, joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Former Presidents from right, Barack Obama, Bill Clinton, George W. Bush, George H.W. Bush and Jimmy Carter gather on stage at the opening of a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)

Former Presidents from right, Barack Obama, Bill Clinton, George W. Bush, George H.W. Bush and Jimmy Carter place their hands on their chest for the national anthem on stage at the opening of a hurricanes relief concert in College Station, Texas, Saturday, Oct. 21, 2017. All five living former U.S. presidents joined to support a Texas concert raising money for relief efforts from Hurricane Harvey, Irma and Maria’s devastation in Texas, Florida, Puerto Rico and the U.S. Virgin Islands. (AP Photo/LM Otero)