Sens. JD Vance and Markwayne Mullin have been paying off personal loans to their campaigns at the same time that they're accepting corporate PAC dollars.Anna Moneymaker/Getty Images; Bill Clark/CQ-Roll Call via Getty ImagesSen. Ted Cruz single-handedly altered campaign finance rules last year via a Supreme Court case.Federal lawmakers can now pay themselves back for large personal campaign loans after an election.Two freshman GOP senators have been doing just that — while also taking corporate PAC money.Republican Sens.