The Supremacy Clause is a clause within Article VI of the U.S. Constitution which dictates that federal law is the "supreme law of the land." ... Under the doctrine of preemption, which is based on the Supremacy Clause, federal law preempts state law, even when the laws conflict.
Answer:(A) Participants who were depressed at the start of the study were no more likely to be smokers after one year than those who were not depressed
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Answer: Congress can override a veto by passing the act by a two-thirds vote in both the House and the Senate. (Usually, an act is passed with a simple majority.) This check prevents the President from blocking an act when significant support for it exists. Two-thirds is a high standard to meet—broad support for an act is needed to reach this threshold. The President’s veto power is significant because Congress rarely overrides vetoes—out of 1,484 regular vetoes since 1789, only 7.1%, or 106, have been overridden.1
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