If I may intervene into this purse fight for a moment....
Fed control of airspace began in the 1920s and 30s when people started using airplanes to fly cargo, mail etc. from state to state. The Fed started funding and building airports under the Insterstate Commerce clause. Maybe they went too far when they started controlling airspace for planes that were NOT going state to state, in addition to the ones that were. Though how you would sort them out is a puzzle - unlike ground vehicles, you can't stop planes at the border.
BTW, some jihadi person with a towel around his head would find it fairly easy to rent (or steal) a Cessna 182 just like that one, pack a few hundred pounds of explosives into it (a 182 can lift more than a thousand pounds, including pilot, fuel, cargo etc.), take off when he knows Air Force 1 is coming, and stooge around outside the TFR zone until AF1 is on the ground at LAX; then come in and dive the 182 into AF1 on the tarmac. It would take him about 10 minutes to get from outside the TFR zone to AF1, maybe less.
Secret Service people have shoulder-fired anti-aircraft missiles and assorted other goodies to deal with attacks. But if it turns out to simply be some Sunday flier who didn't check the NOTAMS and didn't have his radio on the right frequency, he's guilty of nothing more than abject stupidity. Putting a Stinger up his ass seems to be a little extreme. The Fed would rather buzz him with an F16 to get his attention and politely lead him to the nearest secure facility. If he doesn't lead, THEN the Stinger (or simply some 20mm cannon shells) become a viable option. But at least they give the guy a chance.
Given the paranoia (which after 9/11 isn't quite so paranoid any more) over terrorists, the Fed responded with appropriate force AND restraint.
If, of course, their activities are within the Constitution.
Do we need a Constitutional amendment here?
If the Fed setting up Temporary Flight Restrictions (as they always do for Presidential travel) is not allowable, then how SHOULD they protect the President against the jihadi raghead in the Cessna, without indiscriminately shooting down Joe Sixpack who was merely stupid?
We now return you to your normal squalling, namecalling, and screechy chest-thumping.
"The social contract exists so that everyone doesn’t have to squat in the dust holding a spear to protect his woman and his meat all day every day. It does not exist so that the government can take your spear, your meat, and your woman because it knows better what to do with them." - Instapundit.com