Wikipedia - National Emergencies Act
Emergency powers
Congress has delegated at least 136 distinct statutory emergency powers to the President, each available upon the declaration of an emergency. Only 13 of these require a declaration from Congress; the remaining 123 are assumed by an executive declaration with no further Congressional input.[2]
Congressionally-authorized emergency presidential powers are sweeping and dramatic, and range from suspending all laws regulating chemical and biological weapons, including the ban on human testing (50 U.S.C. § 1515, passed 1969); to suspending any Clean Air Act implementation plan or excess emissions penalty upon petition of a state governor (42 U.S.C. (f) § 7410 (f), passed 1977); to authorizing and constructing military construction projects (10 U.S.C. (a) § 2808 (a), passed 1982) using any existing defense appropriations for such military constructions ($10.4 billion in FY2018[18]); to drafting any retired Coast Guard officers (14 U.S.C. § 331, passed 1963) or enlisted members (14 U.S.C. § 359, passed 1949) into active duty regardless of ineligibility for Selective Service.
Thanks!