make a case that

make a case that

To state the reasons why something should be done or is or should be the case. You could certainly make a case that alcohol is worse than marijuana, but I doubt that lawmakers will agree with you.
See also: case, make, that
Farlex Dictionary of Idioms.
See also:
  • make a case for (something)
  • be on (one's) case
  • be on somebody's case
  • be on someone's case
  • in case
  • have a case on
  • have a case on (someone)
  • an open-and-shut case
  • open-and-shut case
  • meet the case