Ma'am is OK Again

So it appears we're in the clear to resume calling Senator Barbara Boxer ma'am again...compare:

http://www.youtube.com/watch?v=FE_jGD5nZ6U

versus:

http://www.youtube.com/watch?v=wT9YA-xCihk

Something tells me it's more than a preference for being called "Senator" rather than "Ma'am", but you make the call.