President Trump has used emergency declarations to enact some of his most wide-reaching policies, from sweeping tariffs to completing the wall on the border with Mexico and boosting fossil fuel production.

While some courts have ruled that Trump is exceeding his power, and appeals are ongoing, federal law still grants the president vast sway to wield emergency powers. Under its traditional use and interpretation, this authority enhances the president’s executive power temporarily during crises that occur too rapidly for Congress to respond in a timely fashion.

The Brennan Center for Justice, a progressive law and policy organization, has compiled a list of 150 legal powers a president can unlock by declaring a national emergency.

Elizabeth Goitein, the group’s Liberty and National Sec

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