 One prominent line of argument in favor of universal access to some forms of health care builds on the contribution made by health—and derivatively by health care—to the opportunities people can exercise. The most explicit version of this argument extends Rawls’s appeal to a principle assuring fair equality of opportunity (Daniels 1981, 1985, 2008). Variants on that argument can be extrapolated from Sen’s (1980, 1992) work on capabilities or from Arneson’s (1988) and Cohen’s (1989) versions of “equal opportunity for welfare or advantage,” though there will be differences among these variants in what kinds of care are covered and under what conditions.