President-elect Donald Trump has endorsed House Speaker Mike Johnson (R-LA) to remain in that leadership role as a new term of Congress is set to begin, with his inauguration just weeks away, but not all House Republicans are on board with that idea.

One possible holdout is "undecided" Rep. Chip Roy (R-TX), but he was just thoroughly excoriated by one of his GOP colleagues, Rep. Derrick Van Orden (R-WI), for, in effect, opposing Trump's mandate by opposing Johnson, Fox News reported.

Given the exceptionally thin incoming Republican majority, in which only a couple of votes can be lost, any serious opposition to Johnson's continued speakership could prove detrimental to the swift implementation of Trump's America First agenda.

"Immediate relief" needed

In a lengthy Truth Social post on Monday, President-elect Trump touted the GOP's trifecta of electoral wins in November and asserted, "Let's not blow this great opportunity which we have been given. The American people need IMMEDIATE relief from all of the destructive policies of the last Administration."

"Speaker Mike Johnson is a good, hard working, religious man. He will do the right thing, and we will continue to WIN," Trump added. "Mike has my Complete & Total Endorsement. MAGA!!!"

There are at least a couple of holdouts, though, including libertarian-ish Rep. Thomas Massie (R-KY) and conservative Rep. Roy, who object to the massive spending bills passed under Johnson, typically with more support from Democrats than Republicans.

Massie a "No," Roy is "undecided"

Yet, while Rep. Massie has clearly indicated and explained why he is a "No" vote for Speaker Johnson, Rep. Roy revealed in a recent interview that he is "undecided," leaving open the possibility that he could be persuaded to support the embattled speaker he currently opposes.

In an X post on Wednesday, Roy wrote, "The reason I am still undecided on the Speaker vote (as opposed to hard no) is it’s not ALL the fault of @SpeakerJohnson & my desire is to give him grace & @realDonaldTrump room to deliver on a strong agenda for which we were elected. But something MUST change."

The Texas congressman went on to complain about the controversial massive spending bill passed by the House to avoid a partial government shutdown at the end of the year, without any offsetting spending cuts, as an example of why he was hesitant to support Johnson continuing as the speaker.

Trump won with a mandate, not Roy

In response later on Wednesday, Rep. Van Orden wrote in an X post, "@realDonaldTrump received a mandate from the American people in November. @chiproytx did not. It is the America First Agenda, not the Chip Roy First Agenda. It is Make America Great Again, not make Chip Roy Great."

"President Trump is fighting for America, Chip is fighting to keep his brand marketable," the former Navy SEAL-turned-congressman continued. "Some people apparently need to understand that in order to be a Leader, you have to learn how to follow first."

"I would love to work with Chip, but he needs to understand he can be part of the Team, but there is no way in hell he is the Captain," Van Orden added. "The Captain will be moving back into the White House shortly and his 1st Lieutenant is @SpeakerJohnson."

Johnson can only afford to lose one vote

According to Fox News, and assuming that all 434 members of the new Congress are present to vote on who the House Speaker will be to begin the next term, Speaker Johnson can only afford to lose one Republican vote and still retain the gavel.

Given that Rep. Massie is likely a firm "No" who will not be swayed, that means Rep. Roy and any other GOPers in the House with reservations about Johnson's continued speakership will need to get past their particular issues and support him, if only initially, so that President-elect Trump can hit the ground running with his agenda as soon as he takes office later this month.