There's a lot of causes that go into it, but one of the things that doesn't help is this admin stopped funding a program to sterilize flies to stop the spread of screw worm. It pretty quickly has spread since then and the US has put a ban on imports from places like Mexico. It's also starting to show up somewhat in the US which if it spread more, would kill a lot of domestic cattle from disease making beef prices go up further

Meat production is also inherently inefficient and relies on using way more plants than eating those plants directly, so costs going up on those is multiplied much more strongly. Meat receiving insane amounts of subsidies is the only reason it was not already super high in price before

There's also drought which is amplified from climate change that this admin has slowed action on, though the causes there are a little more diffuse than just the trump admin. The meat industry is also ironically enough a big emitter too