George Cuckanopolous got cucked (as is his birthright) by the vice president on national TV, and cut the interview off in a huff.
For the record, Cuckanopolous did indeed "insinuate" that the cash transfer was an illegal bribe. But "the cuck", as his friends call him, has no more evidence than anybody else has. That the provider of a certain above-board service, accepted some cash in return for, presumably, that service. Maybe if your entire case would crumble to literally nothing if a check had been written rather than cash, you don't really have much of a case.
Here's some discussion.
Link to video