; or (2) one or more Executive orders relating to the emergency published in the Federal Register and transmitted to Congress. (c) Temporary effective periods (1) In general A declaration of a national emergency under subsection (a), shall last for 30 days from the issuance of the proclamation (not counting the day on which the proclamation was issued) and shall terminate when that 30-day period expires unless there is enacted into law a joint resolution of approval under section 203 with respect to the proclamation. (2) Exercise of powers and authorities Any power or authority made available under a provision of law described in subsection (a) and specified pursuant to subsection (b) may be exercised for 30 days from the issuance of the proclamation or Executive order (not counting the day on which such proclamation or Executive order was issued). That power or authority cannot be exercised once that 30-day period expires, unless there is enacted into law a joint resolution of approval under section 203 approving— (A) the proclamation of the national emergency or the Executive order