eCFR

Trigger: !cfr

Try it

Kagi would openhttps://www.ecfr.gov/cgi-bin/searchECFR?q1=fair+use

Run !cfr in Kagi

URL pattern: https://www.ecfr.gov/cgi-bin/searchECFR?q1=query

Searches www.ecfr.gov, filed under Law.