Donald Trump is proving he’s racist and stupid with his latest post.

In a Truth Social post Thursday morning, Donald Trump appeared to suggest, again, that presumptive Democratic presidential nominee Kamala Harris isn’t really Black, ramping up his identity-based attacks to the horror of those in his party who consider racism a losing electoral strategy.

Earlier in the week, many GOP strategists, including in the Trump camp, worried that attacks on Harris’s race and gender—which seemed all but inevitable considering Trump’s history of racism and misogyny—would pose a serious liability for the campaign. “We hope he doesn’t act like a crazy racist and sexist person, but we can’t control him,” a source close to the campaign told The Washington Post.

These hopes were quickly dashed in the course of Trump’s interview with the National Association of Black Journalists Wednesday afternoon, in which the candidate claimed that, for years, Vice President Kamala Harris “was Indian all the way, and then suddenly she made a turn and she became a Black person.”