Ever since Arizona’s legislature passed a bill that would allow business owners to refuse service to gay and lesbian customers, pressure has been mounting on Governor Jan Brewer to veto the law.

The bill has drawn sharp criticism from LGBT and human rights groups (in addition to quick witted pizza shop owners and crewmembers of the Starship Enterprise) and now GOP politicians are lining up to call for it to be blocked. Last week, the state’s junior senator, Jeff Flake, tweeted his opposition to the law. This morning he was joined by the state's senior senator, John McCain. As if that weren't enough, TPM reports that state senator Steve Pierce, who voted for the legislation, is reversing himself and calling on Brewer to issue a veto.

It’s clear that the issue isn’t going away soon. Despite the already embarrassing attention that Arizona has received since the law was passed, Governor Brewer still has the opportunity to avoid adding another black mark on her state’s recent history. Millions of Americans are watching closely.