All aboard! Biden celebrates Amtrak's 50 years on the rails
President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 02:59 PM EDT
President Joe Biden offers his granddaugther Finnegan Biden a hand as she steps off a train car during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden offers his granddaugther Finnegan Biden a hand as she steps off a train car during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:26 PM EDT
President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:08 PM EDT
President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:11 PM EDT
President Joe Biden speaks during an event to mark Amtrak???s 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden speaks during an event to mark Amtrak???s 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:06 PM EDT
President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:14 PM EDT
President Joe Biden arrives with his granddaughters Finnegan Biden, right, and Maisy Biden, during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden arrives with his granddaughters Finnegan Biden, right, and Maisy Biden, during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:20 PM EDT
President Joe Biden arrives for an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden arrives for an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:22 PM EDT
President Joe Biden arrives to speak at an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden arrives to speak at an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:27 PM EDT
President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

President Joe Biden speaks during an event to mark Amtrak's 50th anniversary at 30th Street Station in Philadelphia, Friday, April 30, 2021. (AP Photo/Patrick Semansky)

Apr. 30, 2021 03:16 PM EDT