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Senate stimulus debate, U.S. vaccine supply, and Treasury tantrum postmortem.

Senators may open the debate on President Joe Biden's stimulus package later today, with Majority Leader Chuck Schumer saying he has the votes to pass the bill. The devil, as always, will be in the details. Democrats are aiming to resolve differences before the amendment process begins as soon as tomorrow. With Republicans needing to peel off only one Democrat vote to reshape some provisions, the final shape of the bill remains uncertain.