“‘What is the holdup?’ said Sheila Krumholz of the Center for Responsive Politics, a nonprofit group that tracks the role of money in politics. ‘She hasn’t exactly made it clear as to what process is making it so cumbersome to just release them.” Campaign finance watchdogs wonder aloud why Sen. Clinton still hasn’t released her tax returns for the past seven years. “‘This is a level of disclosure the American people have come to expect and deserve from those in the White House, or those who aspire to the White House,’ said Mary Boyle of Common Cause, a government reform advocacy group.” And let’s remember, we’re not talking about her 2007 returns, which may not yet be complete. We’re also talking about the previous six years, which should just be sitting on file, and would take all of five minutes to release to the public. That is, unless there’s something shady therein…