USCIS Biometrics Appointment, normal procedure or signs of a delay?

[FamilyGuy330 0]

Hello, I am a US citizen sponsoring my Brazilian Fiancé’s k1 visa. I have received a letter scheduling me for a biometrics collection appointment. Is this a normal part of the process? Or is this due to the felony background I reported in the i129f visa petition?

 

I ask because the letter mentions the FBI will be collecting my biometrics. We aren’t sure if this is normal or if they want to check law enforcement databases to see if I truly reported all of my arrests. (I did report everything in the i129f)

 

If this is an extra step we are going through due to my background, could anyone comment on how much of a delay this might cause?

 

The arrests I had were for the “sale/delivery of schedule 1 substance” in 2012. It was because I had been caught selling bk-mdma, which was a designer version of mdma. At the time bk-mdma wasn’t explicitly illegal, but it was considered an analogue substance and therefore was illegal when represented “for human consumption”. The only other arrest was 2013 for a failed drug test on probation.