yes veto's are very common if the president doesn't see them fit to be laws
Congress is the only the body that can over ride vetoes
Overruling vetoes
The legislative branch
I am not sure what you mean. Congress has overridden some presidential vetoes.
The legislative branch has the power to override presidential vetoes. In so doing, the presidential branch is being checked.
legislativeLegislativethe legislative branch of government can override vetoes - e.g. Congress in the United States
legislativeLegislativethe legislative branch of government can override vetoes - e.g. Congress in the United States
They can override a presidential veto with a 2/3 majority vote in both assemblies of congress.
Congress controls budget, can impeach president, and can override presidential vetoes. The Supreme Court has judicial review.
citizens' vetoes
It depends on which president you're talking about. Franklin Pierce and Andrew Johnson had more than 50% of there vetoes overridden but many presidents had none. In more recent history George W. Bush had 33% of 12 vetoes overridden and Bill Clinton had 5% (2 out of 37) overridden.
President Cleveland cast 414 vetoes in his two terms. 304 were regular vetoes and 110 were pocket vetoes, made when Congress was not in session. Only two of his vetoes were overridden.