National Emergencies Act: Which presidents have declared a national emergency and which are still in effect? - CBS News

President Trump declared a national emergency to free up funds to build a wall without congressional approval on Friday, adding that other presidents have called national emergencies on other topics "many times before." The National Emergencies Act of 1975 allows the president to declare a national emergency, but he must outline the specific emergency powers he is using under existing statutes.

According to the Brennan Center, there have been 58 national emergencies called by presidents since 1979. Thirty-one of those national emergencies are still in effect.

Here is a list of when national emergencies have been used, and what their purpose was:

President Jimmy Carter

President Ronald Reagan

President George H.W. Bush

President Bill Clinton

President George W. Bush

President Barack Obama

President Donald Trump

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