Estimates of the total number of uninsured Americans may be based on "faulty assumptions" that are "inflating the projections," The Wall Street Journal says in its "Numbers Guy" blog. The Census Bureau estimates that the number of uninsured amounts to 45.7 million people," but may be "overcounting by millions." One problem is that "the 45.7 million figure includes undocumented immigrants, even though they aren"t likely to be covered under new laws." Nonetheless, Democrat and Republican lawmakers alike use the "flawed numbers liberally," which is a "reprise of what happened 15 years ago, when the Clinton health plan foundered under differing cost estimates wielded by opponents."