The conclusion from his column today:
What should Congress be investigating? The obvious first step is learning how officials in two administrations convinced themselves it was sensible to stand back and watch as powerful weapons passed into the hands of Mexican drug smugglers.
Then Congress should look into the overall flow of firearms from the United States into Mexico. The Fast and Furious weapons were just a small part of a much larger problem. Mexican officials have complained for years that lax U.S. gun laws have the effect of worsening drug-related violence along the border. The damage done by cocaine, marijuana and methamphetamine smuggled north across the border is mirrored by the damage done by guns smuggled south.
If Issa really wants to save U.S. and Mexican lives, he should convene hearings on banning the sale of high-powered weapons. I think Holder would be happy to testify.
The whole piece here.