This week at TPM we’re kicking off a major four part series on social insurance and risk in the US economy. This is a topic that has always been central to TPM’s editorial concerns. And though we couldn’t have known it when we first planned the series, the timing is fortuitous since last week Sen. McConnell incautiously let slip that Republicans plan to use the expanded deficits driven by the 2017 tax cut bill as a reason to push through big cuts to programs like Social Security, Medicare, Medicaid and more. We’ll be talking about this a lot in the coming weeks. Please look out for the series.