Have this government agency FIRE people over their religious beliefs. That will be rich, a nice litmus test to see just how far gone the First Amendment actually is and to see if a government agency can COMPEL you to violate your faith and morality.
Second, would be an interesting problem to see what the bankrupt state will end up doing with more kids to care for than they have 'foster families' to place them if foster families decided it wasn't worth the money to train up kids to be homosexuals.
But then again, money talks and everything else walks - so perhaps that will never happen and foster families will be happy to teach kids how to be good homosexuals of the money.