Gov. Phil Scott of Vermont on Thursday endorsed the impeachment inquiry against President Trump, becoming the first Republican governor to do so.

Mr. Scott’s announcement, at a news conference, was carefully calibrated. He did not say that he believed Mr. Trump should be impeached, much less removed from office. He said only that Congress should examine the full whistle-blower report, and that it was appropriate for the House to proceed with the inquiry that Speaker Nancy Pelosi announced on Tuesday.

“I think the inquiry is important, yes, and where it leads from here is going to be driven by the facts that are established,” he said.

His remarks at the news conference mirrored a statement his office released beforehand, in which he said he supported the opening of an inquiry but also added: “Most realize impeachment is a very serious issue and should not be taken lightly or abused. Congress has a solemn responsibility to every American to fulfill its role in our government system of checks and balances. It is my hope they will be objective and let their work take them wherever the facts lead, and they will be transparent with the American people every step of the way.”