The #BoycottHomeDepot hashtag trended on Twitter as a virtual battle erupted over the news that the company’s co-founder Bernie Marcus plans to support President Donald Trump’s 2020 reelection campaign.

In an interview that the Atlanta Journal-Constitution published at the weekend, the 90-year-old billionaire praised Trump for having “a businessman’s common sense approach to most things.”

“Now, do I agree with every move that he makes? No, I don’t,” said Marcus, who retired from his role as chairman at the home improvement supplies store in 2002. “But the truth is he has produced more than anybody else. He has,” Marcus added. “If we look at this country, I would say that we are better off today than we were eight years ago or six years ago.”

Marcus reportedly donated $7 million to Trump’s 2016 campaign, when he also penned an essay for RealClearPolitics explaining why he stood “ready to help” the then-reality television personality “at every turn.”

That also sparked calls for a boycott.

Marcus has donated $2 billion to philanthropic causes during his lifetime, reported the AJC, and on his death some 80% to 90% of his estimated $5.9 billion fortune will be used for similar ends.

His backing of Trump has divided people on Twitter over the last week, where some people have demanded a boycott of the store and others have sprung to its defense.

A Home Depot representative told MarketWatch on Monday that Marcus “isn’t speaking on behalf of the company.”