Mike Johnson faces conservative mutiny over Trump-backed plan to avert government shutdown

House GOP leaders' plan to avert a partial government shutdown at the end of this month could be derailed by mounting opposition from fiscal hawks within their own party.

Speaker Mike Johnson, R-La., rolled out legislation late last week to extend the current year's government funding levels through March via a continuing resolution (CR) to give congressional negotiators more time to work out the next fiscal year's spending priorities.

It's attached to a Republican-led bill for a proof of citizenship requirement in the voter registration process.

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Despite former President Donald Trump blessing the plan, Johnson can afford little room for error with a razor-thin House majority of just four votes.

As of early Monday evening, it appears that at least four House Republicans are opposed to their leaders' bill – one more GOP "no" vote would ensure Johnson will need to seek out Democratic support for its passage.

Rep. Cory Mills, R-Fla., told reporters on Monday that he and Reps. Tim Burchett, R-Tenn., and Thomas Massie, R-Ky., are all opposed.

"I've made it clear…that I'll be a no on the CR," Mills said. "As far as I'm concerned, this is nothing more than messaging."

Fox News Digital reached out to Burchett to confirm his stance.

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Massie told Fox News Digital last week that he believed it was a mistake for Johnson not to push for a longer CR. Under a bipartisan deal passed last year, a CR extending past April 30 would automatically trigger a 1% government funding cut.

"Speaker Johnson has this teed up in front of him. The 1% cut is in law. All we need is a