Not impressed by either article. Both parties too busy grinding axes.
As prereq to an ITAR waiver, the good senator requested the UK made rules & regs to prevent US technologies leaking to 3rd parties. Tony declined that opportunity so no waiver. In other words "if the UK won't implement safeguards, you're stuck with mine". A position that's got solid congress support.
Either way it's irrelevant to UK's JSF program. A sizable UK order is virtually guaranteed now that agreement's been reached on technology sharing.