U.S. courts ruled in the late 1990s that statistical sampling could not be used to apportion House seats in which 2000 count?

In measuring pressure, what does "psi" stand for? Which United Nations agency is known by the initials WHO? Which English city's "United" soccer club plays its home games at Old Trafford? A U.S. Army officer with one star holds which rank? Which state has the U.S. postal abbreviation MO? Which former U.S. president died on April 22, 1994? A 1965 U.S. stamp marked the 700th anniversary of the birth of which Italian poet? Which USC film school graduate directed "Boyz n the Hood" and "2 Fast 2 Furious"?