Definition of "attempt"...
1. A state politician introduces a bill to ban gay marriage.
2. Citizens collect enough signatures to put a gay marriage ban on the ballot (like prop 8 in CA 2008 for example)
Even if a bill or referendum would pass, it would not go into effect, due to the Supreme Court decision that created the federal right to gay marriage and that is superior to state laws. Why bother with something fruitless?