Bob Owens at Pajama’s Media provides this handy summary of the Obama administration’s Mexican gun scandal.

Major scandals don’t always have the most dramatic beginnings. Andrew Johnson was impeached for replacing the sitting secretary of war; Richard Nixon’s collapse started with a breaking and entering. Bill Clinton’s infamy was guaranteed for quibbling over the definition of a common verb.

It now appears that high-ranking officials in the Obama administration may be writing the end of their careers and risking a life behind bars by arguing about the technical definition of “walking” firearms.

“Gunwalker” now involves the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF); its parent agency, the Department of Justice (DOJ); the Department of Homeland Security (DHS); and the White House itself. But to understand the depth of the scandal you must return to its roots at the beginning of the Obama adminstration.

Within weeks of President Obama’s inauguration in January of 2009, newly installed Secretary of State Hillary Clinton and Attorney General Eric Holder began to craft the meme that Mexican drug cartel violence was rooted in what they view as lax American gun laws. By February 4, we were hearing the infamous “90 percent lie,” the administration’s false accusation that 90 percent of the guns used in cartel crime could be traced to U.S. gun shops…