Bernie Sanders urges Joe Manchin to back Build Back Better bill Sanders, a proud socialist, wrote: “The $3.5 trillion Build Back Better bill, supported by President Biden and almost all Democrats in Congress, is an unprecedented effort to finally address the long-neglected crises facing working families and demand that the wealthiest people and largest corporations in the country start paying their fair share of taxes.” The Democratic Party is split between progressives like Sanders and moderates like Manchin.