This has already been done. The Liberals' solution is "universal background checks." No one but people who aren't going to commit a crime in the first place will pay any attention. Last year there were more than 100,000 stops on FFL gun purchases and less than 100 prosecution follow throughs on the 4600 odd cases that were actually referred for prosecution. The Liberal solution is to mandate more laws that won't be enforced. You cannot "ban semi auto weapons." While some of these attempts have not yet made it to the SCOTUS yet, the Constitution is very clear that you cannot pass an ex post facto law. You cannot make something illegal that was legal when it was done. A gun that was purchased legally must be grandfathered in. There are about 10 million so-called "assault rifles" in private hands right now. Every year more people are killed with knives than with all rifles and shotguns, not just the scary looking ones. Every year more people are killed with clubs than with all rifles and shotguns; not just the scary looking ones.
Calls for banning "high capacity magazines" are equally specious. I can change a magazine out in less than 3 seconds and I'm out of practice. I could do it faster when I was in the Army. Do you actually think that limiting magazines to ten rounds would make a difference?

In the first place they are magazines not clips. Clips are used to load magazines. I personally use a 5 round magazine for hunting because if I can't hit an animal in the first or second round I shouldn't be shooting at said animal. The other three rounds are either for putting an animal that's wounded down or for my protection from other animals.

I own quite a few 20 and 30 round magazines. Those I use on the range. Sometimes I'm shooting for groups. On occasion I just like to pull the trigger as fast as I can just for the heck of it. I can tell you that doing that is way too inaccurate for a mass shooting but with a steady, measured trigger pull a lot of damage can be done.

I'm a life time NRA member and I have no problem with tightening background checks. I do have a huge problem with registration as with the background check we are already registration in a sense but to take it further we're more heading to confiscation.

In my opinion most of the mass shooter have shown signs of having some sort of mental problems and yet nobody acted to check them out or raise an alarm

In the long run if the Government comes for my guns, I will comply, one bullet at a time. Mike

This is the whole problem. People who do not have a clue about what they are talking about wanting to make laws for all of us. it is not possible to buy guns on the Internet. It is not possible to buy guns in a State where you do not reside. You must fill out a Federal form 4473 to purchase ANY firearm.

https://www.atf.gov/firearms/docs/4473-part-1-firearms-transaction-record-over-counter-atf-form-53009/download

In addition you must show a picture ID and wait while your State Police do a background check to verify you are not a "prohibited possesser", and are allowed to buy and own a firearm. This is the Federal law. Other places have additional laws like California's 10 day waiting period. If you haven't participated in the process and are ignorant of it you are not qualified to make decisions for the rest of us.
The violent behavior is supposed to be addressed with the background check.

Semper Fi

This is the whole problem. People who do not have a clue about what they are talking about wanting to make laws for all of us. it is not possible to buy guns on the Internet. It is not possible to buy guns in a State where you do not reside. You must fill out a Federal form 4473 to purchase ANY firearm.

https://www.atf.gov/firearms/docs/4473-part-1-firearms-transaction-record-over-counter-atf-form-53009/download

In addition you must show a picture ID and wait while your State Police do a background check to verify you are not a "prohibited possesser", and are allowed to buy and own a firearm. This is the Federal law. Other places have additional laws like California's 10 day waiting period. If you haven't participated in the process and are ignorant of it you are not qualified to make decisions for the rest of us.
The violent behavior is supposed to be addressed with the background check.

Semper Fi

Several Reasons follow: Very limited in scope under latest laws. Vast majority of mass shooters have not been declared insane under these laws. Like most crimes that get solved or prevented, it takes someone to take action and the police to follow through.

https://www.hhs.gov/hipaa/for-professionals/special-topics/nics/index.html

https://imidatasearch.com/mental-health-records-background-check/

https://www.modernhealthcare.com/article/20160106/NEWS/160109963/hipaa-rule-change-part-of-move-to-fight-gun-violence

Not some, or most but all school shootings since 1955 have been carried out by ones on pharmaceutical drugs to cure a chemical imbalance or just coming off these drugs. Most of these 200 drugs are not drugs at all but poisons. Average profit on these drugs is $7.5 million a day with over 100 million taking these drugs world wide. This would explain these mass stabbings and fires in gun free nations. Don't expect any politician telling you this as the pharmaceutical industry spends more than any other lobbying group. 6 times that of number two.

Fluoride is the main ingredient in Prozac Fluoride was used by the NAZIs during WWII to make their victims go mad and to this day is poured into our water. All members of the FDA have financial ties to the drug industry. These drugs are being approved twice as fast and twice as many.. No one on Earth knows what a chemical imbalance is.

I'm a little confused by your post. Rather than ask you to clarify, I'll just point out an undeniable fact; the cities with the strictest gun laws have the highest gun violence rates.

Here is the violent crime rates in Kennesaw, GA. from 2001 to 2017, a town where it is the law that everyone must own a gun.

Violent crime rate in 2017 Kennesaw: 130.3 U.S. Average: 214.8
Violent crime rate in 2016 Kennesaw: 106.7 U.S. Average: 216.3
Violent crime rate in 2015 Kennesaw: 91.1 U.S. Average: 208.5
Violent crime rate in 2014 Kennesaw: 64.8 U.S. Average: 200.7
Violent crime rate in 2013 Kennesaw: 54.3 U.S. Average: 204.3
Violent crime rate in 2012 Kennesaw: 50.8 U.S. Average: 214.5
Violent crime rate in 2011 Kennesaw: 34.8 U.S. Average: 214.1
Violent crime rate in 2010 Kennesaw: 32.9 U.S. Average: 223.2
Violent crime rate in 2009 Kennesaw: 49.9 U.S. Average: 238.0
Violent crime rate in 2008 Kennesaw: 49.7 U.S. Average: 252.4
Violent crime rate in 2007 Kennesaw: 59.7 U.S. Average: 259.7
Violent crime rate in 2005 Kennesaw: 60.3 U.S. Average: 258.9
Violent crime rate in 2004 Kennesaw: 55.2 U.S. Average: 256.0
Violent crime rate in 2003 Kennesaw: 53.6 U.S. Average: 262.6
Violent crime rate in 2002 Kennesaw: 61.8 U.S. Average: 272.2
Violent crime rate in 2001 Kennesaw: 51.4 U.S. Average: 276.6

It would seem that more guns equal less crime.