What can happen if the president chooses to veto a law that has been approved? 1.the law returns to being introduced in one of the houses.2.the president’s decision can be overridden by a majority of congress.3.the law is rejected and cannot be reconsidered.4.the president’s decision is scheduled for review within a year.

I believe the answer is: The president's decision can be overridden by a majority of Congress.

in order to override it, the congress need to obtain more than 2/3 of the votes among its members.  But such effort is rarely focused because the power between parties tend to split evenly among the congress. If one party decided to always back the president, it is very unlikely that congress would obtain 2/3 majority votes.

thomas jefferson

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