John McCain is getting all mavericky again. What could go wrong?

Sen. John McCain is talking with Democrats about a joint effort to require outside groups that have spent millions of dollars on this year’s elections to disclose their donors.

McCain (R-Ariz.), once Congress’s leading champion of campaign finance reform, has kept a low profile on the issue in recent years.

He raised the ire of many Republicans a decade ago for pushing comprehensive reform, and many Republicans still held it against him during his 2008 presidential campaign.

Good-government advocates who worked with McCain in the 1990s and early 2000s had begun to think he’d given up on the issue. But McCain said Tuesday he could join Democrats once again to form a bipartisan coalition, even though it would annoy the Republican leadership.

“I’ve been having discussions with Sen. [Sheldon] Whitehouse [D-R.I.] and a couple others on the issue,” McCain told The Hill. (Read More)

McCain is working to make it easier for President Obama to add to his enemies list. He says he’s doing it to make sure the unions are treated the same as corporations. But everyone knows who the unions donate to, so what difference will that really make? We won’t hear from the media that big labor is a special interest group influencing Democrats, but we’ll hear all about the evil rich people and corporations who dare to contribute to Republican PACs.