Need to Know

The Romney campaign has extensively vetted prospective vice presidential nominees.  Reams of financial information, including tax returns, have been requested and received.  Before selecting a running mate he needs to know any potential problems.  Apparently, he sees no contradiction in denying the American public the same information before we vote for a president.  Are there improprieties in his tax returns?  We need to know.  Until we do, we need to say no to his candidacy.