WASHINGTON — President Donald Trump on Thursday threatened to invoke the Insurrection Act in response to rising tensions between protesters and federal agents in Minneapolis."If the corrupt politicians of Minnesota don’t obey the law and stop the professional agitators and insurrectionists from attacking the Patriots of I.C.E., who are only trying to do their job, I will institute the INSURRECTION ACT, which many Presidents have done before me, and quickly put an end to the travesty that is taking place in that once great State," Trump wrote in a post on Truth Social.His warning came just hours after a federal...