I fly out of Austin and go through DFW all the time, often w/less than an hour. When I get a trip with less than an hour I will see if I can get on an earlier flight so there's less to worry about at DFW. I'm sure there are planes leaving at least every hour in the mornings from IAH too.
And if there are seats on the plane they'll put you on to make sure you get on the plane to CZM. Skylink is nice, but when I was there last it was broken so it was only going in one direction. Then they halted the trains because some kid got lost.
So yeah, it can take >20 minutes to get from gate to gate. Customs and Immigration in Mexico is fun since there's a red and green light system when you have nothing to declare. You push a button, if it green you go, if it turns red they inspect your bag for contraband.
The red light is rare. First you'll have to show your ID Mexico will take your DL + proof of identity like an birth certificate -- which you sent to the US gov -- or voter reg card, however ... more.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.