If you need it spelled out - Providing thousands of automatic weapons, rifles, pistols, and hand grenades to Mexican Drug Dealers without the ability to track the weapons once in the criminals' hands resulting in not only the failed Fast and Furious 'sting' operation but also the needless deaths of supposedly over 500 people, to include 4 US citizens.
The idea of conducting this operation was brought to President Bush, but he refused to allow it to happen because of the fact that once the weapons were in the hands of Drug cartels they could not adequately be tracked.
I find this Obama administration program, and its outcome, especially ironic since about the time this program began Obama brought the President of Mexico to the US. allowing him to lecture the people of the United states from the floor of Congress. In that speech he rebuked the US, declaring this nation did not have the right to enforce its existing Immigration policy AND ALSO talked about how many of the deaths of civilians - murders - in his country were due to guns smuggled in from the US...and it turns out the man who invited him to the US - Obama - was the main 'smuggler' / 'arms dealer' for Mexican Drug Cartels at the time.