The president may have objections to provisions of a bill but does not want to risk Congress overriding a veto.
A veto is a legal power to unilaterally stop official action. In the most typical case, a president or monarch uses a veto to prevent a law from becoming law.
In many countries, the veto power is enshrined in the national constitution. Veto powers are also found at other levels of government, including state, state, local governments, and international organizations.
Some vetoes can often be overcome by majority vote.
In the United States, he can overrule a president's veto with a two-thirds majority in the House and Senate.
However, some denials are absolute and cannot be overridden. For example, in the United Nations Security Council, the permanent members have absolute veto power over any Security Council resolution.
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