After months of relative silence, former Gov. Nikki Haley (R-SC) is openly campaigning for former President Donald Trump, making good on her endorsement of a former opponent she bitterly fought in a tough primary — blasting out an email to his supporters saying she and him are “united.” Her decision drew derision on social media from conservative attorney turned never-Trump strategist George Conway. “What do you call someone who gets called a ‘birdbrain’ by a political opponent and then goes out and campaigns and raises money for that opponent?” wrote Conway. Want more breaking political news?…