Since the start of the year, Castro has launched quite the legal campaign against Donald Trump, filing lawsuits in at least 14 states: Alaska, Arizona, Idaho, Kansas, Maine, Montana, New Mexico, Nevada, North Carolina, Oklahoma, Pennsylvania, Utah, West Virginia and Wyoming.
Speaking to Newsweek, Castro said: "If SCOTUS [the Supreme Court] rules in my favor, his name cannot appear on the ballot in *any* state because the Constitution's election clause giving states power over elections only applies to congressional races." He has said he now plans to file similar lawsuits in blue states such as Massachusetts.
By October 9, the Supreme Court is expected to reach a ruling on the existing cases. Trump himself has branded the lawsuits "election interference."