History
How Executive Veto Powers Check Legislative Authority
Quick fact
In the United States, a presidential veto can only be overridden by a two-thirds majority in both chambers of Congress, a high threshold that makes successful overrides rare, giving the president enormous leverage over legislation.
Why this is interesting
You often hear that a president can 'veto' a bill, but what does that really mean for the power balance between the executive and the legislature? Why is this simple word so crucial in political battles?