U.S. Senator Joe Lieberman (I-CT) (L) looks on as U.S. Republican presidential candidate Senator John McCain (R-AZ) places a note in the cracks of the Western Wall, Judaism's holiest prayer site, in Jerusalem's Old City March 19, 2008. McCain came to Israel on Tuesday as part of a fact-finding tour of the Middle East which could also boost his popularity among American Jewish voters. REUTERS/Peter Andrews (JERUSALEM)My advice was to wear a black suede kippah, but I forgot about possible peer pressure from Lieberman. U.S. Sen. John McCain, center, and Sen. Joe Lieberman, far left, arrive at the Western...