I'm not sure a draw against England is all that bad. If we draw against England and beat Iran, we end up with 5 points. That leaves two scenarios (depending on the result of Wales/Iran) going into the Wales/England game.
Wales beat Iran
USA 5 points
England 4 points
Wales 4 points
Iran 0 points.
A result in the England/Wales game gives the winner 7 points, and they and the USA advance. A draw leads to a 3 way tie bewteen the US, England, and Wales. Tiebreakers are, in order: goal differential and then number of goals scored.
Iran beats Wales
USA 5 points
England 4 points
Iran 3 points
Wales 1 point
England beats Wales and England wins the group with 7 points, the US advances with 5. Wales beats England, the US is tied for the group lead and England and the US advance. Obviously, this is the best scenario for US, if we draw against England.
Of course, a win against England is the best outcome for us, as it almost guarantees us a spot in the knockout round.