Originally Posted by GUWonder

Is a Mexican ID ("Mexican Maricula Consular") good for travel on US Airlines?

Yes, and:

An Albanian government-issued ID is good for intra-US travel.
An Algerian government-issued ID is good for US travel.
A British government-issued ID is good for intra-US travel.
A Bulgarian government-issued ID is good for intra-US travel.
A Canadian government-issued ID is good for intra-US travel.
A Chilean government-issued ID is good for intra-US travel.
A Chinese government-issued ID is good for intra-US travel.
A Danish government-issued ID is good for intra-US travel.
A Dutch government-issued ID is good for intra-US travel.
An Ethiopian government-issued ID is good for intra-US travel.
A French government-issued ID is good for intra-US travel.
A German government-issued ID is good for intra-US travel.
A Hungarian government-issued ID is good for intra-US travel.
An Indian government-issued ID is goodd for intra-US travel.
A Japanese government-issued ID is good for intra-US travel.
A Kenyan government-issued ID is good for intra-US travel.
A Laotian government-issued ID is good for intra-US travel.
A Mongolian government-issued ID is good for intra-US travel.
A Norwegian government-issued ID is good for intra-US travel.
A Omani government-issued ID is good for intra-US travel.
A Portuguese government-issued ID is good for intra-US travel.
A Qatari government-issued ID is good for intra-US travel.
A Russian government-issued ID is good for intra-US travel.
A Swedish government-issued ID is good for intra-US travel.
A Thai government-issued ID is good for intra-US travel.
A US government-issued ID is good for intra-US travel.
A Vatican government-issued ID is good for intra-US travel.
A Yemeni government-issued ID is good for intra-US travel.
A Zambian government-issued ID is good for intra-US travel.

.... and a Mexican government-issued ID is certainly good for intra-US travel. Long may it be that way. Of course if xenophobia isn't given a rest, changes for the worse may happen.