I took interview about 2 months ago. and i haven't received my oath letter yet. But my brother got oath letter about one month ago.
I also visited INFOPASS (one month ago) and IO told me that i have to wait because they are scheduling que now. USCIS says wait all the times.
If i write a letter to Senator/congressmen then, do they go over whole application? or do they help to make scheduled for oath letter only?