Journalists wait for U.S. President Joe Biden to arrive to board Air Force One as he leaves at Yokota Air Base in Fussa, Japan, Tuesday, May 24, 2022. (AP Photo/Eugene Hoshiko)

President Joe Biden tells reporters he will speak about the mass shooting at Robb Elementary School in Uvalde, Texas, later in the evening as he arrives at the White House, in Washington, from his trip to Asia, Tuesday, May 24, 2022. (AP Photo/Manuel Balce Ceneta)

President Joe Biden pauses as he speaks about the mass shooting at Robb Elementary School in Uvalde, Texas, from the Roosevelt Room at the White House, in Washington, Tuesday, May 24, 2022, as first lady Jill Biden listens. (AP Photo/Manuel Balce Ceneta)

President Joe Biden speaks about the mass shooting at Robb Elementary School in Uvalde, Texas, from the White House, in Washington, Tuesday, May 24, 2022, as first lady Jill Biden listens. (AP Photo/Manuel Balce Ceneta)

President Joe Biden speaks to the nation about the mass shooting at Robb Elementary School in Uvalde, Texas, from the White House, in Washington, Tuesday, May 24, 2022, as first lady Jill Biden listens. (AP Photo/Manuel Balce Ceneta)

The American flag flies at half staff on the White House after President Joe Biden spoke about the mass shooting at Robb Elementary School in Uvalde, Texas, from the White House, in Washington, Tuesday, May 24, 2022. (AP Photo/Manuel Balce Ceneta)

President Joe Biden speaks to the nation about the mass shooting at Robb Elementary School in Uvalde, Texas, from the White House, in Washington, Tuesday, May 24, 2022, as first lady Jill Biden listens. (AP Photo/Manuel Balce Ceneta)