Discuss.
Cargo of the Brig Aurora v. United States,
11 U.S. 382 (1813)
In 1809, the United States Congress enacted a law imposing restrictions on trade with Great Britain and France. That act expired on May 1, 1810, on which date Congress passed a new law providing that, should either France or Britain "revoke or modify her edicts as that they shall cease to violate the neutral commerce of the United States, which fact the President of the United States shall declare by proclamation, and if the other nation shall not within three months thereafter so revoke or modify her edicts in like manner," then the 1809 trade restrictions were to be revived with respect to that nation.
In The Aurora v. United States, the Supreme Court dismissed the argument that this form of contingent legislation was unconstitutional with a single sentence: "[W]e can see no sufficient reason, why the legislature should not exercise its discretion in reviving the act of March 1st, 1809, either expressly or conditionally, as their judgment should direct." Justice Johnson, writing for the Court, did not have the courtesy to elaborate.