here's abc's white house correspondent, karen travers. >> reporter: tonight, president-elect donald trump's second term cabinet is nearly complete. with a flurry of announcements this weekend, trump nominating heads for each of the 15 agencies that comprise the cabinet. among the last chosen, brooke rollins. nominated for agriculture secretary. the most notable announcement friday, the president-elect selecting billionaire wall street veteran scott bessent, an economic adviser and fund-raiser for trump who also spent years working for a democratic mega donor. bessent, a supporter of trump's proposed use of tariffs and extending tax cuts in his first term, winning the bitter battle for this top spot. rounding out the picks, lori chavez deremer to lead the labor department, and surgeon and regular on fox news dr. marty makary, chosen to lead the food and drug administration. the major hurdle tonight, trump's nominees have not undergone the traditional required fbi background checks ahead of senate confirmation hearings because the trump team still hasn't signed the necessary memo of understan