G. Gordon Liddy

Whoever had the brilliant idea of making Capricia Marshall a guest on MSNBC's "1600 Pennsylvania Avenue" last night was probably hiding from host David Gregory when the show ended.  Marshall turned out to be the least forthcoming guest I have ever seen on a political talk show.  The aide to Hillary Clinton put up a smiling stonewall that would make G. Gordon Liddy—who chose a stiff prison…