"Why hasn't the IRS pulled their tax exempt status?"
Not only that, but they (a 501c3) encourage illegal activities. Desertion, sedition, travel to Cuba (which they even tried to organize), you name it.
There is a lot of evidence that Code Pink are paid agents of Hugo Chavez. And yet they are not registered as foreign agents, as is required by law.
It is a travesty that they have 501c3 status. Perhaps if enough people would complain about it to their Congressmen and the DOJ and the IRS, something might be done about it.