According to other posters here, as of the first of this year USBank was still doing automatic CLIs every 6 months. These posters were also told by CSRs that if you didn't receive auto increase you could call and they would be able to see by looking at your account if you were eligible for an increase. If not, they can tell you and offer to do a hard pull to see if you qualify for one.

Call...if not eligible, they won't pull your credit report unless you ask.