The question was 'what specific laws do you think would have prevented this tragedy?'
You answered something about 2013 laws - I'm assuming that you meant Colorado's laws. Your answer doesn't address his question. He purchased the firearms through a licensed DEALER, meaning that he went through a background check. All that CO's 2013 laws did was require the SAME EXACT background check between private sellers, that people who purchase firearms through a dealer already go through. Clearly the error her, not shockingly, lay 100% at the hands of the government. He shouldn't have been able to pass the background check, as his military conviction, and his discharge status, were both preclusive to passing an accurate background check. The laws were in place, and they didn't work.