Rep. Jerry Nadler burst out into laughter Thursday when a legal group leader with close political ties to former President Donald Trump testified to complete ignorance on all matters. “I have no awareness of anything,” America First Legal Vice President Gene Hamilton declared. Upon hearing Nadler chuckle, he affirmed, “I have awareness of what my clients tell me.” Nadler and Hamilton, a former Justice Department aide who helped shape Trump’s travel bans, were engaged in a battle of wits during a House Judiciary’s immigration subcommittee hearing on the Biden administration’s southern border po…