Obama wasnt stonewalled by conservatives. Obama was stonewalled by his own inability to compromse, his inability to reach across the aisle, his inability to treat other opinions as valid, his inexperience and his incompetence.I wouldn't want E. Warren running for POTUS anyways. She would run into the same problem that Obama has run into: being stonewalled by the conservatives. She is significantly more effective is she maintains her position as senator.