Marc Thiessen: Yes, the Clintons should be investigated

President Donald Trump’s critics are arguing that GOP calls for the Justice Department to investigate Hillary Clinton and Democrats’ ties to Russia are an effort to distract from the real Russia investigation, into potential Trump-Russia collusion.No, they are not.Ever since Watergate, the mantra of all major corruption investigations has been to “follow the money.” Well, Americans of all political stripes should be outraged by the fact that both Democrats and Republicans