No, Jero. They use the rankings from two weeks before the tournament starts (If I'm not wrong, that's when the inscription closes). Anyways, Haas is ranked 36th, and when the seedings were done he was already down in the ranks cause he lost Autralia's points.
What the heck are you talking about? You sound more confused than Jeronimo.
The entries were due 6 weeks ago on February 11th, Haas was ranked 27 (all tour level tournament entries are done 6 weeks/42 days in advance). The seeds for the main draw are done right before the draw is made, based on the most current rankings (except in the case of Slams which release them a day or two in advance). Haas is ranked 36th this week, and so he is not seeded in Miami. Hope this helps.