I thought it was an interesting statement for someone to make who hasn't really shown any support in an effort to keep working people out of poverty (ie minimum wage, loss of overtime pay, giving companies tax breaks on moving jobs offshore, etc). But now he want's to make sure when they reach retirement, they shouldn't be in poverty??
I think it was an insincere political statement designed to make people who disagree with his plan look bad. That said I still give him credit for at least talking about means testing.