I’m still waiting for some Republican, any Republican, to explain the concept of judicial review to religious conservatives who refuse to accept the Iowa Supreme Court’s ruling in Varnum v Brien.

GOP moderates led by Doug Gross have been warning that Republican candidates won’t win in 2010 if gay marriage is their only campaign issue. But I haven’t heard anyone challenge the assertion by many conservatives that the Supreme Court’s decision is just an opinion with no legal force.

Since no Republican has stepped up to the plate, I’m offering a brief lesson on judicial review after the jump.