It is up to you to prove it. Otherwise you are just another lying sack. I can prove that Trump donated 50,000 to McConnells Super Pac. Not that it makes a difference to a mushy moderate.
It’s from a valid source, in spite of Cruzers attacking the source. I’ll expect that it should be denied by Cruz himself if it becomes a big enough story. Perhaps since he was on the committee he could provide a list of whose campaigns they did support. If money from that committee went into that dirty primary smear campaign and nobody spoke out in public, that’s of course unacceptable.