The US is a melting pot of people and cultures. Pork is a very important food source for many cultures. Pork is heavily used in Mexican Food, Asian Food, and traditional American Breakfast Food, among other foods. While some cultures eat no pork and will be fine with this type of rule, it is a very important protein source to many cultures.
Substitutes/replacements for pork in the traditional American Breakfast Food are being attempted (plant based, more turkey blend in the meats) however I do not see these items selling very well; I often see them marked down and not even selling on markdown.
Where I am going here is it is going to be impossible to get rid of pork consumption in the US with a few waives of a magic wand over a short period, unless you physically take the pork and say it can no longer be sold. There are tactics that can be tried, for instance, not serving any pork product in school lunches, to try to get kids not used to pork (similar to what has been done with soda) but it is questionable how well that would work. Perhaps prohibit purchases of pork with food stamps. I don't know. Getting rid of pork consumption will take a generation or two to happen and would have to be done slowly, so slowly nobody would notice what was going on.
Some states (as we see CA doing) may try to regulate pork. The irony being that regulation and the associated price hike or pork shortage hurts a significant portion of the population in the state who uses pork in their cuisine. Personally I believe the pork rule should go into effect in CA as it was voted by voters as HCal has said, because, the voters supposedly voted for it. At this point, where things are at, people will either put up with the rules or leave the state. Eventually things will be pushed too far and people will revolt against these types of rules. But by the time that happens, the supply chain will already be torn apart (pork producers leaving CA) and the problem will be very difficult and costly to repair. At this point the politicians pushing these types of thing are on thin ice because people are starting to connect the dots that it is causing a ton of inflation and now they are scared. If this case had been heard at Federal level 2 years ago, they would have thrown it out and the CA law would have been validated.
Ideas like this can work in smaller countries with small population groups who are easy to all get on the same page. It could probably work in a small US state like a VT, RI, or something too. But in a state as large and diverse as CA, this type of thing, is not practical. The progressive groups have taken an opposite approach trying to force their causes through large CA first then hoping small states and even other countries will follow since CA is so large. This seemed to be working, until it didn't (when people can no longer afford this stuff).