DLP Policy Rule "U.S. Physical Address" exclusion

I've attempted to make a custom Sensitive info type with regular expression, with no supporting elements, of the following to find US Physical addresses:

^\d+\s[A-z]+\s[A-z]+(\s[A-z]+)?,\s[A-z]{2}\s\d{5}(-\d{4})?$

With Additional Checks of Exclude specific matches of every combination of our physical address and PO Box I can think of. When I run the test feature with an email containing addresses, it says it found nothing. :/