Us civilian lawyers frequently get questions about recruiting:
Why can’t I join; why can’t I join without a waiver; why is my OTH, GD, RE2 a bar to enlistment.
Here is part of the answer:
Congress & Law reports the statistics. What causes people to be rejected can be boiled down – a bad economy, and currently not a lot of focus on combat deaths mean good recruiting. This means less or no waivers.