What is the Obama administration trying to cover-up?

Why are they trying to get people to not testify in the ATF “Fast and Furious” gun probe? Could it be that if these witnesses testify, that they will implicate the Obama administration and ATF in being complicit in the “Fast and Furious” weapon fiasco?

We think this is most likely the case.

The Obama administration sought to intimidate witnesses into not testifying to Congress on Tuesday about whether ATF knowingly allowed weapons, including assault rifles, to be “walked” into Mexico, the chairman of a House committee investigating the program said in an interview Monday.

House Oversight and Government Reform Committee Chairman Darrell E. Issa, California Republican, said at least two scheduled witnesses expected to be asked about a controversial weapons investigation known as “Fast and Furious” received warning letters from the Bureau of Alcohol, Tobacco, Firearms and Explosives to limit their testimony.

Mr. Issa’s committee is set to hear testimony from six current or former ATF employees, including agents and attaches assigned to the bureau’s offices in Mexico, about the operation