Ms. Lively - Monica's chances of winning the US Open won't change if she's seeded #4 vs #5.
The rules allow them to rank Lindsay #1 if they want. I doubt they will because Venus is defending champ and playing. Serena is current #1 and RG and WB champ. More to the point, that's where the U.S sponsors want them. Below that, there's more discretion.
Lindsay was 99 champ, and was #1 when she got hurt. The rules allow them to seed her according to her Special Ranking, but don't require it. They can do it, no question.
They can always put Monica #3 if they think she has more of a chance than Jenn. Jenn will have something to say, of course, but if Lindsay has a better summer, it won't matter.
As of the change to 32 seeds, all the Slams reserve the right to rank away formt he seedings.
Me personally, I'd seed Lindsay #3, say '#1', 'ex-champ' and 'injury ranking' to anyone who protested, and give #4 to whoever had the bets summer between Monica, Jenn, Justine and Jelena.
However, since it's the 'US' Open, I'd expect the top four seeds to be US players, and maybe the top 5, if they move Lindsay there as a meaningless prop. Now if Linday beat Serena this summer, they may move her into the top four seeds.
Proud to be an American
Not blind. Not uninformed. We are party to atrocities. But the response of the world after 9/11 is worth noting. Even our most dire enemies offered aid. We should all be so lucky.