Officials in a North Texas county debunked claims made by a Fox News host that migrants were registering to vote outside a state drivers license facility west of Fort Worth — an unsubstantiated claim that appeared to spark an investigation by Attorney General Ken Paxton’s office. Both the Parker County Republican chair and election administrator said there was no evidence to support the Aug. 18 social media post made by television personality Maria Bartiromo, who previously promoted conspiracy theories about the 2020 election. Paxton’s office announced it was opening an investigation into “rep…