[Marcello]

I believe the reasoning was that the F-22 was to be the tip of the spear, sweeping the skies of enemy fighters. The F-35 was to be the less capable/expensive workhorse. Selling the latter instead of the former made sense as foreign sales increase the chance of it being compromised by foreign intelligence: iranian F-14s anyone? Better risk the F-35 rather than the F-22.