The Third Amendment states that “No Soldier shall, in time of peace be quartered in any house, without the consent of the Owner, nor in time of war, but in a manner to be prescribed by law.”  The British practice of quartering troops among (and in buildings owned by) colonists was one of the  grievances enumerated in the Declaration of Independence. While never the subject of a Supreme Court case, the Third Amendment was cited in Griswold v. Connecticut in 1965 as one of the sources of the implied right to privacy.