(CNN) President Donald Trump is showing signs of increasing frustration with the uncertainty surrounding his Senate trial as he spends time in Florida over the holidays at his Mar-Lago resort with a rotating cast of aides.

Trump has settled into something of a routine during the first week of his holiday in Florida, firing off shots at Speaker Nancy Pelosi on Twitter for withholding articles of impeachment from the Senate in between rounds of golf and mingling with family and friends.

He also vented about his impeachment while taking questions from reporters after his holiday greetings to US troops on Christmas Eve and when he spoke to conservative students last Saturday.

Trump's apparent frustration with the state of limbo comes as Senate Majority Leader Mitch McConnell continues to signal ambivalence about starting the trial. The Kentucky Republican said earlier this week that he is not anxious to move on to the task, despite the President's clear eagerness.

A source close to Trump says the President has been seeking input over the holidays from a variety of allies about who should be on his defense team and what his defense strategy should be. There are serious discussions about having some of his House GOP allies play a role in the trial, but Trump hasn't made a final call, people familiar with the matter say.

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