So El Chapo had a .50 caliber machine gun? It could easily be from the Bush/Cheney gun-running policy, which they called 'Operation Wide Receiver', and instituted within the ATF back in 2006.
The Bush administration started the gun-running to Mexico policy. Eric Holder and the Obama administration were 'exonerated' on 'Fast and Furious'. Those are the historical facts, not Fox News/World Nut Daily hyperbole.