If you didn't get an entry/exit record via 0520 form, then it does not affect you.
The situation I'm referencing are those who visit the US, don't get stamps (often US citizens who immigrated to Canada, but does affect other visa-exempt countries like most of Europe, Austraila, etc. who happen to have lots of US trips in the 5 years prior to citizenship application).
If you have US trips, no passport stamps, then the officer has the discretion to pull an 0520, which triggers this lengthy request for FOIA records access for entry dates to the US.
...Its a pain!