WASHINGTON - Monday seemed like the end of President Donald Trump’s relentless challenges to the election, after the federal government acknowledged President-elect Joe Biden was the “apparent winner” and Trump cleared the way for cooperation on a transition of power. But his baseless claims have a way of coming back. And back. And back. The 2020 presidential race is turning into the zombie election that Trump just won’t let die. Despite dozens of legal and procedural setbacks, his campaign keeps filing new challenges that have no hope of succeeding and making fresh, unfounded claims of fraud. But that’s the point....