Former President Trump’s campaign team filed a complaint with the Federal Election Commission on Monday, labeling the U.K. Labour Party’s efforts to support Vice President Harris as “election interference.

Trump, who hasn’t yet addressed the topic, has himself waded into British politics in the past. As President, he endorsed Johnson’s 2019 bid for the Conservative Party leadership and, while weighing into the country’s election campaign months later, said that the then-opposition Labour Party Jeremy Corbyn would be “ so bad ” for Britain.

Donald Trump's campaign has accused British Prime Minister Keir Starmer's Labour Party of "blatant foreign interference" in the U.S. presidential election after its volunteers travelled to the United States to help campaign for Kamala Harris.