The Supreme Court dismissed a 2018 lawsuit against the
Affordable Care Act filed by a group of Republican-led
states, saying they were not being harmed by the law's
unenforceable individual mandate provision since it had
been "zero-ed" out by the Republicans' tax bill. The
Supreme Court ruled that the plaintiffs in the case lacked
A) mootness.
B) standing.
C) stare decisis
D) a writ of certiorari