Back in February, federal officials testified before the Senate Finance Committee about the solvency of the social security system.
Today, the policy and think tank experts take a crack at the issue.
Business groups who back the president's proposed reforms and Democrats who oppose them are treating today's hearing as a milestone in the social security fight.
As the hearing proceeds inside a Senate office building, rallies for and against the President's proposal will be taking place outside, in an attempt to sway minds and hopefully, move votes.
Committee Chair Charles Grassley has said that by summer he would like to come up with a bi-partisan bill that shores up social security.
But Democrats remain unalterably opposed to a provision allowing private investment accounts and even some Republicans don't want to go along.