Longtime Trump confidant and adviser Roger Stone has regularly attacked RNC chairman Reince Priebus, labeling him a corrupt “douchebag” and calling for him to be “prosecuted.” Media outlets have been reporting on strained ties between the Republican National Committee and Donald Trump’s struggling presidential campaign.

BuzzFeed recently reported that “Some are advising that the Republican National Committee, which is running its planned robust field operation, cut off money to the Trump campaign and focus on other races — something that an RNC staffer acknowledged to BuzzFeed News could be a possibility.”

Politico also reported that “Priebus has been working aggressively to coach Trump into being a more disciplined candidate” and “has warned that if Trump does not better heed this persistent advice to avoid dustups driven by his rhetoric, the RNC might not be able to help him as much — suggesting that money and ground resources might be diverted.”

Politico added that “Within the Trump campaign, there has been suspicion for months that the RNC already has not been as supportive of its nominee as it could — and should — be, according to operatives in and around the campaign.”

Roger Stone, one of Trump’s longest-tenured allies and advisers, has been perhaps the harshest critic of Priebus in the nominee’s orbit. Stone heads a pro-Trump super PAC after working for the campaign last year. He regularly meets with Trump and his senior staff, and is a former business partner of campaign head Paul Manafort. Stone has repeatedly demonstrated that he has Trump’s ear on strategy.

Stone for years has attacked Priebus as corrupt, a “loser,” a “douchebag,” a Republican In Name Only, and a “f*ck up.” He also habitually refers to Priebus as “Reince Penis.” Here are some of Stone’s attacks against Priebus over the years on his Twitter account:

This is what peace with Reince and the RINOS get you. https://t.co/nvsOp1YCCf

— Roger Stone (@RogerJStoneJr) August 14, 2016

Ryan and Reince in extortion play against @realDonaldTrump https://t.co/rSpYVjLBS4 #busted

— Roger Stone (@RogerJStoneJr) May 10, 2016

Ff the Karl Rove/Wall Street/Beltway /@Reince Penis RINOS who screwed #RonPaul continue to run the GOP they will continue to lose

— Roger Stone (@RogerJStoneJr) February 5, 2013

Rove congratulates @Reince Penis on re-election as chairman of crumbling Party #gonifs #losers #done

— Roger Stone (@RogerJStoneJr) January 26, 2013

The Fleisher Report ? Biggest cover up in GOP since Watergate ! @Reince should be prosecuted

— Roger Stone (@RogerJStoneJr) December 27, 2012

GONIF ALERT # 3--Rove and @Reince Penis loot RNC--http://t.co/1OJE3Yss

— Roger Stone (@RogerJStoneJr) December 12, 2012

#Romney's entire election day operation melted Down--@Reince Penis f*ck-up- http://t.co/nyukhMuw

— Roger Stone (@RogerJStoneJr) November 14, 2012

@BenReilly01 Priebus is Latin for douchebag

— Roger Stone (@RogerJStoneJr) October 8, 2012

RNC Chairman and hopeless midget @Reince Penis says @GovGaryJohnson an “non-factor” in election http://t.co/g9rLAq7N We'll see

— Roger Stone (@RogerJStoneJr) October 7, 2012

RNC Chairman Rancid Penis kicks off the #CNNDebate

— Roger Stone (@RogerJStoneJr) December 16, 2015

RNC Chairman Pribus must resign or be dumped-- worthless asshole.

— Roger Stone (@RogerJStoneJr) December 23, 2011