Which is a way for a bill to become law without the president's signature?

A bill can become law without the president’s signature if the president refrains from signing it for a period of ten days while Congress is in session. This action allows the bill to automatically become law without explicit approval from the president. The ten-day period is significant because it reflects the intent of Congress when they have passed legislation; if the president does not act within this timeframe, it indicates that there is no disapproval.

In instances where Congress is in session and the president doesn't sign, this ten-day rule effectively prevents any potential obstruction if the president chooses not to act on a bill. This mechanism serves as a check on presidential power, ensuring that legislation can proceed even if the president is indifferent or opposed.

This response provides an understanding of how timing and inaction can influence the legislative process and the relationship between the branches of government.