Vice President Hillary Clinton travels to Iowa , a key state in presidential campaigns . `` Things are out of whack , '' Biden said about the tax system in the United States . ` He speaks at an event for the State Department on the Bus , a social justice campaign . Biden trails Joe Biden in recent polls for the Americans nomination in 2008 .
Vice President Hillary Clinton travels to Iowa , a key state in presidential campaigns . He speaks at an event for the State Department on the Bus , a social justice campaign . Biden trails Joe Biden in recent polls for the Americans nomination in 2008 .