"DeSantis vs. Trump: GOP race heats up with surprises and immigration policy implications."

Florida Governor Ron DeSantis is set to kick off his presidential campaign in Iowa, with stops in New Hampshire and South Carolina to follow. DeSantis has been stepping up his criticism of former President Donald Trump, questioning his conservative credentials and handling of the coronavirus pandemic. DeSantis' campaign is being supported by the Never Back Down super PAC, which is using unlimited sums of money from wealthy contributors to organize support for him. Trump is also expected to visit Iowa this week, with events scheduled for Thursday.