I did but every time they are saying you need to wait for at least 30 days to respond. For I-751 my 30 days are on Dec 16th and for N400 my 30 days are on Jan 7th.
One more thing, I filed I751 in CSC and they trasnfer it to NBC.I got I-751 approval letter from NBC but my service request for I-751 assigned to CSC. I searched online and figure it out that they produce card from NBC . They should assign my service request to NBC.
Rmsh got a reaction from Charly2 in N-400 and I-751 combo pending