Two billionaire Democratic donors have publicly pressured Vice President Kamala Harris to replace the F.T.C. chair, Lina Khan. Wall Street insiders are worried that could backfire.Wall Street Democrats have spent the last eight years complaining about their relationship with Washington. They found former President Donald Trump’s presidency unpredictable, and then became estranged from the Democratic Party as President Biden hired the most aggressive antitrust regulators in recent memory. But now that Vice President Kamala Harris is the party’s presumptive presidential nominee, they see a chance to regain influence.Some have returned to a long tradition of writing checks, scheduling fund-raising dinners and orchestrating subtle campaigns. But others, embracing the public lobbying welcomed by Trump and employed by outspoken C.E.O.s like Elon Musk and Bill Ackman, are openly calling for Harris to oust Lina Khan, the chair of the Federal Trade Commission: “I think she’s a dope,” Barry Diller, the chairman of IAC, told CNBC. (He later apologized for calling her a dope, but not for critiquing her policies.)Reid Hoffman, the LinkedIn co-founder, spoke to CNN twice about his Khan concerns. “Antitrust is fine,” Hoffman said. “Waging war is not.” (He later clarified that he would support Harris regardless of whether she replaced Khan.)Few on Wall Street would disagree with that stance — Khan has moved to block deals with seemingly little concern over losing in court. But behind the scenes, many are irked by this kind of public lobbying, arguing that it exposes a misunderstanding of the way the Washington game is played, and that it could backfire.Their concerns are echoed by strategists: “I’m not really sure if it’s very effective,” Stuart Stevens, a political consultant who previously worked for Mitt Romney, told DealBook. “I’ve always felt once you make these things public, it makes it harder for politicians to do.”Critics immediately called the public lobbying self-interested. The F.T.C. has reportedly opened multiple investigations that involve subsidiaries of Diller’s IAC, according to CNN, and Hoffman has a seat on the board of Microsoft, whose investment in OpenAI is also under scrutiny from the F.T.C.We are having trouble retrieving the article content.Please enable JavaScript in your browser settings.Thank you for your patience while we verify access. If you are in Reader mode please exit and log into your Times account, or subscribe for all of The Times.Thank you for your patience while we verify access.Already a subscriber? Log in.Want all of The Times? Subscribe. More