As a junior, you should have known better.I have a strong application (520, 4.00 all the rest). In my junior year, I was caught with a fake ID at a grocery store which was submitted to the university. I received a policy violation and was put on "deferred probation" which just means I couldn't get in trouble again that semester. Realistically, how much of an impact will this have on my application?
But own it, and you should be OK