Mobil Oil Corporation (Mobil) had its headquarters in Beaumont, Texas. It operated a fleet of eight oceangoing tankers that transported its petroleum products from Texas to ports on the East Coast. A typical trip on a tanker from Beaumont to New York took about five days. No more than 10 to 20 percent of the seamen’s work time was spent in Texas. The 300 or so seamen who were employed to work on the tankers belonged to the Oil, Chemical & Atomic Workers International Union, AFL-CIO (Union), which had an agency shop agreement with Mobil. The state of Texas enacted a right-to-work law. Mobil sued Union, claiming that the agency shop agreement was unenforceable because it violated the Texas right-to-work law. Who wins? Oil, Chemical & Atomic Workers International Union, AFL-CIO v. Mobil Oil Corp., 426 U.S. 407, 96 S.Ct. 2140, 1976 U.S. Lexis 106 (Supreme Court of the United States)