Southwest Border Judgeship Act of 2000 - Directs the President to appoint, by and with the advice and consent of the Senate, specified: (1) permanent judgeships (three additional district judges for the southern district of California, one additional district judge for the district of New Mexico, and two additional district judges each for the southern and western districts of Texas); and (2) temporary judgeships (three additional district judges for the district of Arizona, one additional district judge for the southern district of California, and one additional district judge for the district of New Mexico). Authorizes appropriations.