Fourteen California congressional Democrats are asking for more information about how Customs and Border Protection implemented President Trump’s travel ban of all refugees, and visa holders from seven predominantly Muslim countries. The letter, led by Rep. Judy Chu , specifically mentions reports that travelers at Los Angeles International Airport and other airports were forced to sign Form I-407, relinquishing their legal right to enter and remain in the U.S. The letter asks for what guidance the agency received from the Department of Homeland Security on implementing the order as well as any complaints about the implementation filed at LAX.