OPT 133XXX timeline

3.13 We received your case
5.15 We are producing your card and will mail it to you
5.16 We approved your case

赶紧寄给我吧，我看月底回家的机票好便宜！

补充内容 (2018-5-24 14:14):
5.22 Card Was Picked Up By The United States Postal Service
而且还给了tracking number，感觉USCIS服务升级了