Enforce the gun laws already on the books!

For years National Rifle Association has said that the best way to fight illegal gun use is to enforce the laws already on the books, not pass more laws.

From the NRA's synopsis of Maryland's laws on purchase, possession and carrying of firearms:

It is unlawful for any person to sell or transfer a handgun to any person whom he knows or has reasonable cause to believe is prohibited from possessing a handgun (see "POSSESSION" above) or if the buyer or transferee is:
a. Of unsound mind.
b. Visibly under the influence of alcohol or drugs.
c. Under 21.