A little more light on campaign spending, please

The U.S. Supreme Court's 2010 ruling in Citizens United vs. FEC opened the floodgates of corporate and special-interest election spending, but at least it underscored and promoted the importance of disclosure and transparency. Knowing the source of campaign money allows voters "to make informed decisions and give proper weight to different speakers and messages," the court wrote.

The ruling could be read as an invitation to Congress to expose political "dark money" to the light with stringent disclosure laws — but it's an invitation that Congress has yet to accept in any meaningful way.

Read More