Ditto on brining and on temperature.
There is a great article at Cooks Illustrated on temperature. The gist is that there are NO cases of illness from trichinosis/trichinella in the US that weren't from small farms where they fed them garbage, etc.
Commercial pigs? Not problem. Since the pork is so lean these days, it's like shoe leather if you heat it to 170. . . or 160. The parasite is killed at 140 or so. Take the meat off at 145, let it sit for a few minutes and it will rise to 148 or so. This is plenty to kill it, even if is was present, which it is 99.99 percent certain not to be.
I just went through this with my partner. His family is obsessed with critters in food. They can't stand meat that isn't so overcooked it's inedible. This works with low and slow, but a steak???? At any rate, I showed him all of the information and he finally came around. We had a pork loin stuffed with tapenade. Brined it first, then grilled it to 145. Delicious.
One note on the brine from my perspective. You'll see different amount of salt and sugar to water on different Websites. CI researched it and decided that less salt doesn't work. But, I don't like salty, so I've played with it. I can use less salt - not a lot, but some - and slightly less time. I still get more tender meat and a little less salt.
Last caveat - if you brine, watch the salt content of any rubs or sauces - I brined some ribs a month or so ago then used my regular rub - full of salt. While good, they were too salty. Now I have a batch of rub that I keep for when I do brine - it doesn't have the salt in it and it works much better.