http://www.oyez.org/cases/1792-1850/1841/ U.S. Supreme Court Decisions, presented by The Oyez Project (www.oyez.org) en-us <p>Does the Mississippi constitutional provision banning importation and sale of slaves unconstitutionally encroach on congressional commerce power?</p><p>The provision did not become effective until a supporting statute was enacted, but that supporting statute followed the sale in question. Hence, the contract was valid.</p> http://www.oyez.org/cases/1792-1850/1841/1841_0/