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President Biden has pledged to get 100 million COVID-19 vaccine doses to Americans in his first 100 days in office. And when reporters asked Biden if that plan was ambitious enough last week, he doubled down on the original plan.

Even though the U.S. hasn't reached Biden's goal of giving 1 million vaccines each day, Biden still seemed ready to push forward on Monday. "I am quite confident that in the next three weeks or so," the U.S. will get that pace up to 1 million per day, and quickly after could make it to 1.5 million, the president said in a press conference. Every American who wants to get a vaccine will be able to do so by spring, Biden promised, though the COVID-19 pandemic itself could rage through summer and "early fall," he added. Immunologists meanwhile contend distributing only 1 million vaccines per day will drag the pandemic into 2022.

Biden is pushing to get Congress to pass a $1.9 trillion stimulus bill after signing a series of coronavirus-related executive orders last week. He declared "time is of the essence" when it comes to passing the bill, but wouldn't pull out specific pieces of the legislation to prioritize on Monday.

Biden also gave a confusing interpretation of his calls for unity, suggesting that a bill that doesn't have bipartisan support doesn't necessarily lack unity.

That comment comes as the Senate tries to work out a power-sharing agreement that's essentially at a standstill.