Requiring caregivers to accept union representation whether they want it or not does not trample on their constitutional rights, a federal judge has held.In a written opinion last week, U.S. District Judge Manish S. Shah rejected the argument that the state of Illinois is violating the First Amendment by granting a particular union — the Service Employees International Union, Healthcare Illinois, Indiana, Missouri, Kansas — the exclusive right to bargain for certain caregivers.The caregivers are personal …