Which Supreme Court case(s) has(have) made it illegal to draw congressional districts based solely on the racial make-up of the district?

When using a quasi-experimental design, rival hypotheses can sometimes be ruled out by

a. eliminating the pre-test c. eliminating the control group c. eliminating the IV d. making a complex prediction

Although Proposition 215 allowed the use of medical marijuana, the U.S. Supreme Court ruled in _____ that federal law enforcement could still prosecute users

Fill in the blank(s) with correct word