Sen. Ted Cruz went after House Majority Leader Mitch McConnell Monday, arguing that he works for Democrats — including Sen. Chuck Schumer (D-NY) — to help get their liberal policies passed in Congress.

“I have said that Majority Leader Mitch McConnell is the most effective Democratic leader in modern times” wrote Cruz in Politico. He added:

But don’t take my word for it. Take Sen. Chuck Schumer’s, the vice chair of the Senate Democratic conference. Today Sen. Schumer summed up what’s wrong with Washington when he told Politico, “Sen. McConnell wants to see the Senate work. But the good news for [Democrats] is, to make it work, he has to do basically our agenda.”

Cruz also went after the record of Republican leadership in the Senate.

“Since taking control of the Senate, Republican leadership has joined hands with a majority of Democrats to thwart their own caucus’ efforts to stop the Obama agenda 24 times. During each of these 24 votes, this so-called Republican majority successfully passed legislation with a majority of Democrats in support and a majority of Republicans opposed.”

Last week, Schumer gloated over the Democrats’ win in the 2016 budget talks, and declared that:

“Well, if you would’ve told me this year that we’d be standing here celebrating the passage of an omnibus bill, with no poison pill riders, at higher [spending] levels above sequesters than even the president requested, I wouldn’t have believed it, but here we are… Almost anything, the Republican leadership in the Senate achieved this year, they achieved on Democratic terms… Democrats had an amazingly good year.”

Since his election in 2012, Cruz and McConnell have clashed repeatedly over conservative priorities.