Maybe we could get a top law enforcement guy for the whole US. We could call him, The President. And we could empower him to enforce the laws of the country through various agencies. Maybe we could name two of those agencies the Department of Justice, and the Bureau of Alcohol, Tobacco, Firearms and Explosives. And then we could pass a law making it illegal for convicted felons who lost the right to have a firearm to try and buy one! We could call it, The Gun Control Act of 1968!
Then, that President guy could instruct his subordinates in those two departments, to enforce that 48 year-old law, and FINALLY we'd have some good controls in place to stop convicted felons from getting guns!
Do you see where this is going yet?
In 2010, out of 48,321 felons and fugitives who attempted to illegally purchase firearms, the Department of Justice prosecuted only 44 of them. https://youtu.be/06wJ50p6rMs
That's 48,321 open and shut cases of felons and fugitives swearing in writing on their ATF Form 4473 that they can legally posses a gun, when they couldn't. President Obama's Justice Department gladly allows 99.91% of the prohibited felons who attempt to buy a gun from a federally licensed dealer simply walk free. Right there are 48,321 of your felons illegally trying to get guns, and being allowed to get away with it.
We don't lack strong controls. We lack any will from President Obama to enforce the law, and it's quite on purpose. If the current gun laws were rigidly enforced, gun crime would drop, and the president wouldn't be able to whine incessantly about how we need more gun laws.