This seems to align with current US policy. What a surprise!
This looks to be part of a larger set of changes to the AA baggage fees as of today:
http://www.aa.com/i18n/travelInforma...eAllowance.jsp
I also noticed that AS non-Gold MVPs also lost the second bag per the AA exceptions page, but yet not per AS:
http://www.alaskaair.com/content/mil...-benefits.aspx
Let's see if AS reciprocates.