The conservative group Turning Point USA has a knack for producing some of the most damaging moments in a politician’s career,an MSNBC columnist argued this week — and he said it could come back to bite former President Donald Trump. Ja’han Jones, who has written extensively about the group’s embrace of some of the most extremist activists on the fringe right, singles out the group’s leader Charlie Kirk, whom he writes has managed to maintain his “conservative clout” despite the group “repeatedly backing failed candidates.” “The past week has underscored TPUSA’s power over Republicans as well…