A bunch of SLBM's and sea-launch cruise missiles would really go a long way toward thwarting the Russian ABM system...not to mention what sort of unpleasantness we have squirreled away in black projects.
Remember, the F-117 was 25 years old (iirc) before the public found out about it.
You might want to read #25 before you put to much faith in phantoms...
black projects will not win a full scale war...front line operational systems like MX analogue win/prevent war if early warning...the US has a soft underbelly to 1st strike