Because they all are politicians, deep in the ways things have been done for years world wide and in Washington, catering to the every whim of special interest, lobby and minority groups....Obama, a first and foremost proven thourohbred politically only motivated individual and any other candidate from the Washington experienced will never meet the well stated criteria:

"...Presidential candidates who are smart enough and brave enough to push an agenda which will move us forward...."

Obama and the 534 incumbents demonstrate daily they will not ever take any action or make any decisions that involve risk to their being able to be re-elected...their first and foremost priority. Hence what needs to be done will not be!

btk