A Fred Thompson presidential run is looking more and more likely, says DC columnist and political insider Robert D. Novak: Close friends of Fred Thompson say his wife Jeri is urging him to take the plunge later this year and run for the Republican presidential nomination. The former senator from Tennessee and current actor on "Law & Order," in private conversation, makes it clear that he is seriously interested in launching a candidacy that has attracted extraordinary attention over the last two weeks. However, he does not plan to announce his candidacy in the immediate future. The major rap against...