question: Which court case upheld the Selective Service Act of 1917, Lawrence v. Texas or Selective Draft Law Cases?
answer: Selective Draft Law Cases
context: Title: Lawrence v. Texas
  Passage: Lawrence v. Texas, 539 U.S. 558 (2003) is a landmark decision by the United States Supreme Court.  The Court struck down the sodomy law in Texas in a 6-3 decision and, by extension, invalidated sodomy laws in 13 other states, making same-sex sexual activity legal in every U.S. state and territory.  The Court, with a five-justice majority, overturned its previous ruling on the same issue in the 1986 case "Bowers v. Hardwick", where it upheld a challenged Georgia statute and did not find a constitutional protection of sexual privacy.
  Title: Selective Draft Law Cases
  Passage: Arver v. United States, 245 U.S. 366 (1918) , also known as the Selective Draft Law Cases, was a United States Supreme Court decision which upheld the Selective Service Act of 1917, and more generally, upheld conscription in the United States.  The Supreme Court upheld that conscription did not violate the Thirteenth Amendment's prohibition of involuntary servitude, or the First Amendment's protection of freedom of conscience.
  Title: Conscription in the United States
  Passage: Conscription in the United States, commonly known as the draft, has been employed by the federal government of the United States in four conflicts: the American Civil War, World War I, World War II, and the Cold War (including both the Korean and Vietnam Wars).  The third incarnation of the draft came into being in 1940 through the Selective Training and Service Act.  It was the country's first peacetime draft.  From 1940 until 1973, during both peacetime and periods of conflict, men were drafted to fill vacancies in the United States Armed Forces that could not be filled through voluntary means.  The draft was ended when the United States Armed Forces moved to an all-volunteer military force.  However, the Selective Service System remains in place as a contingency plan; all male civilians between the ages of 18 and 25 are required to register so that a draft can be readily resumed if needed.
citations: Selective Draft Law Cases Lawrence v. Texas