INDIANAPOLIS (AP) -- Gay marriage opponents who have spent more than a decade working to strengthen Indiana's laws say they aren't daunted by a growing acceptance of same-sex unions.
Federal courts have overturned gay marriage bans in Oklahoma, Utah and New Mexico, and 19 states now allow gay marriage or civil unions.
Support for a proposed amendment that would put Indiana's gay marriage ban into its constitution is wavering amid concerns about its impact on businesses.
But proponents of a ban say the issue is that values would be compromised if Indiana doesn't take the extra step to ensure it remains a state where marriage can only be between a man and a woman.
The amendment passed the Legislature in 2011 and must pass again by March to go to voters in November.