Donald Trump returns to the White House in two weeks with everything seemingly going his way -- from stronger grassroots support than ever to a cowed billionaire class and a demoralized opposition.
Yet a chaotic and polarized Republican Party on Capitol Hill threatens to frustrate his ambitions for a legacy-defining second term unless he is able to master the political equivalent of herding cats.
The Republican rank-and-file reveres Trump's "Make America Great Again" (MAGA) agenda of tax cuts, tough border controls and boosted fossil fuel production, but long-simmering disagreements on how to get it into law are starting to boil over.
"Our members are ready to get to work and we have hit the ground running, as we promised everyone we would on the campaign trail," an upbeat Mike Johnson, who leads the Republicans in the House of Representatives, told reporters this week.
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But Johnson's troops have been locked in an increasingly heated debate with their Senate colleagues over whether to pass Trump's entire agenda in one giant, all-or-nothing package or break it up into smaller chunks.
Top MAGA policy aides have argued that a piecemeal approach would allow Trump to notch a straightforward early win on border security without having to get bogged down in more contentious fights.
But House Republicans worry that, with their threadbare and fractious majority, they will only get one swing at this -- and that renewing Trump's fast-expiring 2017 tax cuts will fall by the wayside if it is peeled off from immigration reform.
Trump muddied the waters in his inimitable style by flip-flopping on his own preference.
"I like one big, beautiful bill and I always have, I always will," Trump told reporters on Tuesday. "But if two is more certain, it does go a little bit quicker, because you can do the immigration stuff early."
US President-elect Donald Trump has confused Republicans by flip-flopping on his legislative strategy
The fight is just one of many potential speed bumps as Trump races against time to make his mark before the Republican iron grip on Washington is potentially weakened by midterm elections in just 22 months.The former real estate mogul, 78, is already behind the pace he set on winning his first term in 2016, when the Senate took important procedural steps towards passing his priorities before he set foot on Pennsylvania Avenue.
Trump has previewed other upcoming battles -- from reversing President Joe Biden's offshore drilling restrictions to acquiring Greenland and the Panama Canal -- that could drag the administration into court.
But support from a Supreme Court bolstered by three of Trump's own nominees seems more assured than an easy ride in Congress.
Trumpist Oklahoma Senator Markwayne Mullin acknowledged during a leadership challenge in the House last year that a disunited rank-and-file on Capitol Hill could be Trump's biggest frustration.
"The Republican Party, it's like trying to herd cats. Everyone is going in different directions," he told Fox News.
Trump has already demonstrated that he is not above rolling up his sleeves and wading into the fray.
He micro-managed Republicans through the recent House leadership election, upbraiding lawmakers by telephone in the middle of votes for ticking the wrong box, and strategizing in daily phone calls with key players.
He has spent much of the post-election period on a charm offensive targeting high-profile business executives and key Republican interest groups at Mar-a-Lago, the oceanfront redoubt that he calls his "Winter White House" in Florida.
Having won what critics see as tacit concessions from leading press barons and tech CEOs that he can expect less friction in 2025 than he got in 2017, Trump was due in Washington on Wednesday to build trust with Senate Republicans.
A dinner is planned at Mar-a-Lago on Thursday with Republican governors -- heavyweight, largely independent-minded politicians needed by Trump to execute his program at a state level -- and various lawmakers are dropping by on Saturday.
Trump also plans a giant bash for the entire Senate Republican group in the coming weeks, US media reported.
On the Democratic side, leaders in Congress have pledged to work with Republicans to improve people's lives -- but also to hold Trump's feet to the fire over campaign promises.
"They are now in the majority. They now have the responsibility," Senate Minority Leader Chuck Schumer said on the floor of the chamber on Tuesday.
"We and the American people will be watching."