The World Cup 2022 announcement, in which the United States is in the running, was expected at 9:00 a.m. (central) on Thursday but it appears that may be delayed. BBC reporter James Pearce reports that the voting, and thus the announcement, has been delayed.
A source at FIFA has just told me that the voting is still going on. The announcement is likely to be later than scheduled
If it's a simple majority for one country then voting wouldn't take this long. Pearce's report suggests that this voting is indeed close. The 2022 World Cup could go into four rounds of voting to find the winner. Judging by the delay in the announcement, it sounds like they've gone past round one.
The United States, Qatar and Australia are considered the three front-runners at this point.