Service Employees International Union (SEIU) President Andy Stern laid down the law on Sunday when it comes to the proposed co-op compromise on healthcare reform.

Checking in on Twitter, Stern seemed to dismiss the idea of creating publicly available co-ops in lieu of the public (conservatives say "government-run") option on healthcare reform. That potential compromise was floated by Sen. Kent Conrad (D-N.D.), the chairman of the Senate Budget Commitee.

Stern, in response, tweeted Sunday: