Despite his previous pledge to enter into the public financing system should he be the Democratic presidential nominee, Sen. Barack Obama, D-Ill., has recently been reluctant to re-commit to entering the system. This reluctance has coincided with his primary, caucus, and fundraising successes. For that reluctance, Obama has been hammered as hypocritical by Sen. John McCain, R-Ariz., not to mention impartial observers. Tonight at a fundraiser in Washington, D.C., at the National Museum of Women in the Arts -- at a $2,300-per-person event for 200 people held before a $1,000-per-person reception for 350 people -- Obama previewed his argument to...