" Article I requires every bill, order, resolution or other act of legislation approved by the Congress to be presented to the president for their approval. After that is done, there are several scenarios in which a bill may or may not be enacted into law.
The president may sign the bill within 10 days (excluding Sundays). This enacts the bill into law.
The president may return the bill to Congress with a statement of objections within 10 days (excluding Sundays). This is a "veto."
If the president vetoes a bill, the president's objections shall be considered by the Congress. Each house may vote to override the president's veto. If 2/3 of each house agree to override the president's veto, the bill is enacted into law.
The president may do nothing, and after 10 days (excluding Sundays) if Congress has not yet adjourned, the bill is enacted into law.
The president may do nothing, and if Congress adjourns before the 10th day (excluding Sundays), the bill is not enacted into law. This is known as "pocket veto". (It can't be overridden and must be reintroduced.)*"
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