Rachel Brock, of Abington Township, Pa. holds up a sign during a protest of President Donald Trump's executive order banning travel to the U.S. by citizens of Iraq, Syria, Iran, Sudan, Libya, Somalia or Yemen, Sunday, Jan. 29, 2017, at Philadelphia International Airport in Philadelphia. "If we don't show solidarity, then we will fall into a regime," Brock said. "And that's just not going to happen." (AP Photo/Corey Perrine)