MICHAEL BARONE: Americans are getting cold feet over Democratic proposals. “The $787 billion stimulus package, the cap-and-trade bill’s utility rate increases, the public health insurance package — all these seem to generate more apprehension than enthusiasm. So does the prospect of doubling the national debt, as the Congressional Budget Office estimates, from about 40 percent of gross domestic product to about 80 percent. That’s about where it ended up after World War II. Americans evidently regard our current economic situation, though negative, as not enough to justify the magnitude of deficit spending that was appropriate in an all-out world war.”