If the people who write fare rules could engage the use of punctuation, the rules would be so much easier to read

All this rule needs is a 1 semicolon and a comma it becomes so much easier to read

IN THE EVENT OF CHANGES TO TICKETED FLIGHTS BEFORE DEPARTURE OF JOURNEY AND WITHIN TKT VALIDITY, CERTAIN DOMESTIC REISSUE PROVISIONS MAY BE OVERRIDDEN BY THOSE OF AA INTERNATIONAL FARES; APPLY CARRIER COMPENSATION FEE OF USD 150.00/CAD 150.00 FOR REISSUE OR HIGHEST FEE OF ANY CHANGED FARE COMPONENT WITHIN JOURNEY

Basically, as mentioned by others


If sold as part of an international itinerary, see rules of the international fare and if this had an overriding rule, apply it. This could be any amount from $0 upwards

otherwise

Change Fee $150

Dave