Criminal record no conviction USA

I lived and worked in Taiwan from 2015 - 2020 and had to move back to the states. I know back then I didn’t need an FBI background check and I do now. I had an arrest in 2014 that led to no convictions and showed up on my local check in '15 but it didn’t hinder me from getting a job. I was wondering since things changed in '17 if this is going to ruin my chances as my record shows an arrest but no conviction due to the charges being dropped. Would it just be easier to get it expunged before I come back or just apply for jobs?

Probably depends what the arrest was for