Barbra Streisand has posted a blog item on her site blasting the Republicans as obstructionists and defending President Obama’s tenure, arguing that he inherited such a big mess that it will take much longer to get the economy back on track.

In a post headlined “Stop. Think. Breathe,” she writes, “Week after week, on the 24 hour cable news cycle, Republican officials and prominent GOP leaders twist, distort and misrepresent the facts in order to place blame on others, while they continue to obstruct progress. It’s like the old saying that if you tell a lie big enough and you keep repeating it often enough, people will eventually come to believe that it is true. Whether they are discussing financial regulation, health care, jobs, the economy, energy policy…virtually every important issue our country is grappling with today, the Republican Party that once stood for something, now refuses to engage in constructive conversation about anything, all the while, offering virtually no new policy alternatives in return.

“Since President Obama took office, the Republican narrative has been to serve their party over serving the people. They have been committed to blocking progress at all costs in order to insure the failure of this President. But now is the time to give President Obama a chance to fulfill his promise of reviving the spirit of hope and possibility that has always allowed our country to dream and to make the impossible possible. The only way he will be successful is if he has a Congress that dreams with him and an American electorate that gives him the chance!”

Her willingness to step into the fray reflects a stark, post-Labor Day realization in the entertainment community’s progressives that the Democratic majority in Congress is in peril. It’s also somewhat of a rallying cry to disaffected progressives who are apathetic about the midterms, in part because of the disappointment over the stalled climate bill, a watered-down financial reform bill and a health-care bill without a public option.