"Follow the money" is an elementary rule for understanding American politics, and in the case of Texas Gov. Rick Perry, the money trail leads to a case of apparent money laundering that involves his Republican presidential rival Mitt Romney and a $1 million contribution from the same Texas tycoon who bankrolled the "Swift Boat" attacks against the 2004 Democratic presidential candidate, Sen. John Kerry.

Bobby Jack "Bob" Perry, a residential construction magnate in Houston, is not related to Rick Perry by blood, only money. But there has been lots of that. As with the Swift Boaters to whom he donated $4.45 million, Bob Perry ranks as the single largest donor to Rick Perry during the latter's 10 years as governor of Texas, according to official figures tabulated and analyzed by Texans for Public Justice, a nonprofit watchdog group in the state capital of Austin.

Bob Perry contributed $2,531,799 directly to Rick Perry from January 2001 to July 2011, TPJ reports in "Crony Capitalism: The Republican Governors Association in the Perry Years." That puts him well ahead of such other notable donors as Koch Industries, the energy conglomerate owned by David and Charles Koch, the chief funders of the Tea Party, and Contran Corp., whose efforts to establish a nuclear waste dump in Texas have succeeded thanks to regulators appointed by Perry. (As Justin Elliott reported this week, Perry is also a leading funder of Karl Rove's American Crossroads political action committee.)

But to truly understand Rick Perry's "pay-to-play" approach, TPJ executive director Craig McDonald told Salon, one must also look at contributions to the Republican Governors Association, which he chaired from 2008 through August 2011.

In an apparent and possibly illegal attempt to hide the money's true origins, Bob Perry has routed $11,450,000 — five times the amount he has contributed to Gov. Perry directly — through the Governors Association since 2006.

That same year, Perry donated $1 million to the Governors Association, which days later channeled $1 million to Gov. Perry's troubled reelection campaign. When Chris Bell, Gov. Perry's Democratic challenger in 2006, filed suit alleging campaign finance violations, Perry's campaign agreed to settle the case and pay Bell $426,000, nearly half the amount of the contribution at issue.

The Governors Association, however, refused to settle.