Over at TPM, Ryan Reilly has an intriguing post about the interest of some tea partiers for a new circulating dollar coin because it supposedly will save the federal government money. This follows a story in the Huffington Post from a week ago about how Rep. David Schweikert (R-AZ) introduced a bill that would eliminate the dollar bill and substitute dollar coins.Here's some very personal and U.S. history about the dollar coin and why this is a terrible idea that is really nothing more than a corporate subsidy.Congress in the late 1990s mandated that the U.S. Mint create a new circulating...