By City A.M. Reporter Donald Trump has won the Iowa caucuses, a crucial victory at the outset of the Republican primary that reinforces the former president’s bond with his party’s voters. The success comes despite his extraordinary legal challenges which could complicate his bid to return to the White House. The magnitude of Trump’s success is still unclear, but the former president’s supporters endured a historic and life-threatening cold snap to participate in caucus meetings at schools, churches and community centres across the state. The results are just the first in what will be a months…