The chairman of CPAC announced that Utah Sen. Mitt Romney is "formally not invited" to the conservative group's annual conference this year.

Matt Schlapp, the head of the American Conservative Union, said Romney is not allowed at the event after the Utah Republican voted in favor of summoning witnesses in the Senate impeachment trial of President Trump. Romney was one of two Republicans who joined 47 Democrats in supporting the motion, which failed to pass on Friday.

"BREAKING: The 'extreme conservative' and Junior Senator from the great state of Utah, @SenatorRomney is formally NOT invited to #CPAC2020," Schlapp wrote in a tweet, which featured a photo of a troubled-looking Romney.

BREAKING: The "extreme conservative" and Junior Senator from the great state of Utah, @SenatorRomney is formally NOT invited to #CPAC2020. pic.twitter.com/f35tYy73V1 — Matt Schlapp (@mschlapp) January 31, 2020

It is unclear whether Romney was expecting to attend this year's CPAC next month.

Romney recently slammed Trump's critical statements about former national security adviser John Bolton, whom Democratic House impeachment managers have fought to have as a witness. Bolton announced earlier this month he would testify if subpoenaed, and excerpts of his unpublished book have leaked to the press in recent days containing allegations of Trump pressuring Ukraine to help collect information on his political rivals.

“He has made a career of trashing people by tweet,” Romney told the New York Times. “It is part of his shtick, and it’s working for him."

This CPAC news comes after Utah state Republican Rep. Tim Quinn introduced a bill that would allow voters to recall a sitting U.S. senator. Quinn, 56, claimed the bill was unrelated to Romney but said it was a “good mechanism in place to make any senator, current or future, a little more accountable to those who elected him or her.”