Should insider trading by Congress be allowed?

UPDATED: Should insider trading by Congress be allowed? – Read pro and con arguments from Newsweek Senior Editor Daniel Gross (pro), US Senator (D-NY) Kirsten Gillibrand (con), Cato Institute Director Jim Harper (pro), Hoover Institution Research Fellow Peter Schweizer (con), Harvard University Economics Professor Jeffrey Alan Miron (pro), US Senator (I-CT) Joseph Lieberman (con), and more.