“I’ve been a leader on immigration reform,” Democratic presidential candidate Amy Klobuchar said last week. “I’m the only one running that’s stood up for immigrants in a really difficult state when it comes to that issue — had ads run against me all the time.” But Klobuchar’s immigration record has come into question recently as the presidential race heats up. After taking third place in the New Hampshire primary, Klobuchar has come under fire for…