it’s not even the first time either. every few years they try to stem the flow of arms, and like clockwork the conservatives and gun nuts get it all thrown out. And then they continue to complain about the violence in mexico.

https://fpif.org/arms_trafficking_at_the_us-mexico_border/

https://vpc.org/regulating-the-gun-industry/gun-trafficking/

https://www.texastribune.org/2013/01/20/will-new-gun-laws-curb-weapons-smuggling-mexico/

https://www.nytimes.com/2009/02/26/us/26borders.html

https://www.nbcnews.com/id/wbna41257218

https://www.npr.org/2011/01/05/132652351/tracking-gun-dealers-linked-to-mexican-violence

https://www.latimes.com/archives/la-xpm-1997-03-15-mn-38557-story.html