Well then it's not Spam, is it? Geez. They were so worried about whether or not they could that they didn't stop to think if they should.
This is a great argument for the anti-immigrant people. "Look, they invented Spam without meat and you want to bring more of them in here?"
Not sure if you're serious or joking, but it's ham. Mostly just ham and salt. Here's a good video on homemade spam which is basically equivalent: https://www.youtube.com/watch?v=FOvAMWupNcs
I'm joking, I actually grew up maybe an hour or two away from the spam museum in Minnesota. I've been , out of curiosity, but I've never actually eaten spam. I have never seen the stuff in Mexico
So SPAM will literally stand for Something Posing As Meat.