Security concerns? No need to eavesdrop on electronics when they have Tulsi to just tell them everything.
I don't think it's as simple as "upgrade it myself." They need data to know how to upgrade it. That takes massive Sigint capabilities, etc. Other countries don't have the capability.
Of course, with our intelligence allies withholding intelligence today and cooperating with each other, the playing field is much more level, so maybe.
I never understood why they stopped making the F22. Less profit, probably.
Even if they don't have an "off switch" they can just not update the software. Those jets require constant updates and without it the radars don't work right and the stealth degrades.
I hope she primaries him. Vote all those decrepit elders out of office.