There was, in fact; the Obama campaign worked hard to demonize it; and its sponsors included Sen. Richard Burr, along with Sen. Coburn (R-OK) and Reps. Paul Ryan (R-WI) and Devin Nunes (R-CA).
John Goodman explodes the myth, then describes the plan, which would “replace all government tax and spending subsidies for the purchase of private health insurance with a fixed-sum tax credit — essentially giving every American the same number of dollars to apply to their health insurance, regardless of where they obtain it.”
Details at the link.