Get insights on the latest news in US politics from Jon Lieber, head of Eurasia Group's coverage of political and policy developments in Washington:

What are the details of the Democrats' proposed $3.5 trillion budget blueprint?

Well, the Democrats this week in the Senate Budget Committee agreed to move forward with the plan to spend $3.5 trillion spread out over about 10 years on a huge portion of President Biden's Build Back Better Plan. This comes on top of a bipartisan agreement, at least in principle, on another $600 billion in physical infrastructure, which is roads, bridges, tunnels, repair, broadband deployment and a whole bunch of other physical infrastructure spending that Republicans and Democrats agree they want to do but aren't clear on how they want to pay for. But on the $3.5 trillion in spending, this is a lot of new social services, it's extending a number of tax subsidies that are going to low-income families and families with kids as part of the American Rescue Plan, which was the Biden stimulus bill that passed earlier in the year. It also includes money for two years of community college, universal preschool, and expands Medicare to cover things like dental benefits and other things that Medicare currently doesn't pay for.