GOP presidential candidate Sen. Ted Cruz (R-TX) posted an attack-ad on Twitter before the Democratic debate on Sunday night, “As the ‪#DemDebate begins, Republicans have to wonder which team ‪@realDonaldTrump would play for.”

Attached to Cruz’s tweet was a link to a YouTube video, which is a montage of GOP frontrunner Donald Trump praising Democrat frontrunner Hillary Clinton during interviews in the past.

“She really works hard,” Trump stated in one of the old interviews. “I think she does a good job.”

“They are just really terrific people,” he said of both Bill and Hillary Clinton. “I like them both very much.”

Cruz and Trump have been criticizing one another since questions arose about whether or not Cruz was a “natural born” citizen and eligible to run for President of the United States after an interview Trump did with The Washington Post.