Former Massachusetts Gov. Bill Weld (R) launched an exploratory committee Friday to consider competing against President Donald Trump in the 2020 Republican primaries.

According to the Boston Herald, Weld made his announcement at the “Politics and Eggs” breakfast in New Hampshire, saying that the country is in “grave peril.”

“We have a President whose priorities are skewed toward promotion of himself rather than toward the good of the country,” he said. “To compound matters, our President is simply too unstable to carry out the duties of the highest executive office — which include the specific duty to take care that the laws be faithfully executed — in a competent and professional matter.”

Weld was reportedly a libertarian vice presidential candidate in 2016, but has since switched back to the Republican Party.

Weld, 73, said that many members of his party had fallen to “Stockholm Syndrome,” falling in line with Trump, “their captor.”