Republican candidates are always asked to repudiate certain endorsements. It's a trap set up by the MSM and Trump is aware of this. They never ask Democrats to repudiate anyone.
Hillary was endorsed by the CPUSA. Yet some here are enabling her and Ted Cruz enabling Obama’s TPA.
http://www.cpusa.org/taking-a-sober-look-at-the-2016-election/
The GOPe has declared war on us. Sooner everybody realizes that the better.