A crazy theory on what Johnson and Thune may be doing here. [View all]
If Congress adjourns its session before the 10-day period (in which the bill must be signed) expires and the President has not signed the bill, it does not become law. This action is known as a pocket veto, and it cannot be overridden by Congress.
Congress is already planning on being closed all next week for Thanksgiving. If Johnson and Thune adjourn their session in the next few days (for the Thanksgiving Holiday) and Trump doesn't sign it before they adjourn, then that serves as a veto and the bill is dead. The whole process would have to begin all over again.
It would not be a good look for them, but I would not put it past them.
It's highly unlikely that they are planning this - they aren't that clever - but I don't think it can be ruled out until or unless Trump actually signs the bill.
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