House Speaker Kevin McCarthy (R-Calif.) faces opposition from a few moderate Republicans as he contemplates initiating an impeachment investigation against President Biden.

McCarthy has vowed to conduct a vote on the floor if he decides to proceed with an investigation into the Biden family's international business dealings, and he can likely afford to lose no more than four Republican votes, as The New York Post reported.

Rep. Mike Lawler (R-NY) said in a CNN interview that aired last month and again Sunday, “For me, with respect to impeachment, we’re not there yet. It is not about focusing on the impeachment; it is a question of, do the facts and evidence warrant any further action.”

Reelection in 2024 will be difficult for Lawler, who had one of the closest victories in the House of Representatives in the 2022 cycle, and he appears to not be alone.

“I think before we move on to [an] impeachment inquiry … there should be a direct link to the president in some evidence,” Rep. Don Bacon (R-Neb.) said in a recent interview with The Hill. “I think we need to have more concrete evidence to go down that path.”

An unnamed Republican told Fox News last week, “I don’t think they have the votes to get it,” he said in reference to the push for an impeachment inquiry.

The number of people who refuse to support an impeachment probe, which is separate from actually impeaching the president, is currently unknown.

However, Republicans who vote against opening an investigation will be put in the awkward position of having to defend President Joe Biden.

Similarly to what previous Speaker Nancy Pelosi (D-Calif.) did with former President Donald Trump, the speaker might theoretically bypass the custom of holding a floor vote to launch a formal inquiry. But McCarthy seems to have ruled that out.

“To open an impeachment inquiry is a serious matter, and House Republicans would not take it lightly or use it for political purposes,” McCarthy said to Breitbart News in a statement.

“That’s why, if we move forward with an impeachment inquiry, it would occur through a vote on the floor of the People’s House and not through a declaration by one person.”

Although he has not said so officially, McCarthy is said to have quietly hinted that he may try to launch his impeachment investigation by the month's end.

“The thing that holds up whether we do impeachment inquiry — provide us the documents we’re asking,” McCarthy told Fox Business host Larry Kudlow last month, referring to Biden. “The whole determination here is how the Bidens handled this.”

“If they provide us the documents, there wouldn’t be a need for [an] impeachment inquiry. But if they withhold the documents and fight like they have now to not provide to the American public what they deserve to know, we will move forward with impeachment inquiry when we come back into session.”