On his ride to superstardom in the United States, Jett Lawrence picked up his second championship on a 250 since moving over from Australia. That of course being the Monster Energy Supercross 250 East Championship, which he officially wrapped up today in Foxborough, Massachusetts. Although the recent injury to Cameron McAdoo accelerated the title-winning process, it was only a matter of when Lawrence was going to pull this off. For Honda, this is their third 250 East Championship in the last four years, with Chase Sexton responsible for the previous two. Be sure to catch up on all of our Super…