For the 1500 they accept the mile to get in to USA's, but they do not seem to accept mile times that are provisional; even though, they equate to faster than some of the provisional 1500 times.
Didn't Get In
Blake Boldon unattached Saucony 3:59.18*
Jake Watson University of Notre Dame 3:59.40*
Got In
Andrew McClary unattached 3:42.04
Sean Jefferson Oregon TC Elite 3:41.96
Brendan O'Keefe ZAP Fitness 3:41.99