In an undercover operation last year, the FBI recorded Tom Homan, now the White House border czar, accepting $50,000 in cash after indicating he could help the agents — who were posing as business executives — win government contracts in a second Trump administration, according to multiple people familiar with the probe and internal documents reviewed by MSNBC. The FBI and the Justice Department planned to wait to see whether Homan would deliver on his alleged promise once he became the nation’s top immigration official. But the case indefinitely stalled soon after Donald Trump became president again in January, according...