The fascist are fully aware of the law. At present it is legal to transfer a gun to anyone within your state who is of lawful age and, to your knowledge, not a prohibited person.
What Blumenthal and his fascist buddies hope to do is convince the public that ANY transfer of a firearm without a background check is in fact a straw purchase. I could see Obama could issuing an executive order to direct the ATF to unlawfully require background checks on all sales or transfers except maybe to a son or daughter.
The ATF will quickly find examples to prosecute to send a message to the sheeple. Some cases will make it to federal court, but considering the liberal federal judges Obama's EO may very well be upheld as constitutional. After all the current law requires background checks and FFL pass through on interstate transfers. Not much of a stretch to see them try to include sales within a state.
The goal in all of this is to enable the Fed Gov to greatly expand their illegal gun registration database which they claim not to have. Meanwhile the GOPe pu$$ies will sit on their hands.
If Obama tried to ban private sales through executive order that Obama order would get nowhere in the courts.