Questions on internet purchases and the "gun show loophole"

I keep hearing the talking heads talking about being able to purchase firearms over the internet without having to go through a background check. I don't understand this, as I have purchased several guns over the internet, and every one had to be shipped from a FFL holder to an FFL holder, who then ran a background check on me. All of these purchases were in Colorado, so perhaps it's a state law.
I even had a firearm I already owned shipped from Colorado to Texas, and had to have the gun sent to a FFL holder in Texas, who had to run a check.
If a non-FFL holder sells a gun to another non-FFL holder via an internet purchase, and a background check is not done on the purchaser, is that legal? Is it a state by state issue? Can someone explain this to me.
I also wonder about the so called "gun show loophole". In Colorado, ANY purchase made at a gun show has to go through a background check. If a non-FFL holder sells a gun, the purchaser must find a FFL holder at the show to run the check. That's the law. FWIW, usually the seller already has an arrangement with an FFL holder who will run the check, and the check is performed over the phone by the Colorado Bureau of Investigation.
What states do not have this or a similar law.
The point I'm getting at is whether or not the media and some lawmakers are crying wolf over this, or if it's legit.
Gun control laws make about as much sense as taking ex-lax to cure a cough.
Replies
Two people arrange a sale on line. Conduct it in person. No check?
These examples are indicative of creative license to manufacture alternative reality for political notoriety and sensationalist infotainment. With the very unfortunate consequences of eroding the constitutional rights of law abiding citizens. They in all likelihood have absolutely no preventative effect on crime.
― Douglas Adams
If you are concerned about a stolen gun, there's https://www.hotgunz.com/
The firearm may be stolen and not in the database, but it shows you gave some effort researching. Also ask for a receipt with the seller's name and address. Another due diligence action.
Adam J. McCleod
ETA: Of course, I am not a BATFEIEIO lawyer, nor have I stayed at a Holiday Inn Express lately, so grain of salt and all that...
George Carlin
I know for a fact that not all states, such as Colorado and Texas, permit a CCL to be used in place of a background check. I have a CCL issued by the state of Colorado, but still had to have a background check done when I purchased a gun from a gun shop. Same for when I had my own firearm shipped to me from Colorado to Texas.
Gun control laws make about as much sense as taking ex-lax to cure a cough.
― Douglas Adams
I wonder about this. Sometimes I watch the investigation ID cop shows that are based on real police investigations. Invariably, a wizened veteran cop will say something like we traced the serial number of a firearm to a specific person. I wonder how they do that if the background records are not supposed to be used like that, or even kept????
Gun control laws make about as much sense as taking ex-lax to cure a cough.
― Douglas Adams
― Douglas Adams
― Douglas Adams