Obama’s news conference on Thursday  explaining in detail the government’s response, its mistakes and its precise relationship to BP  was at least three weeks overdue. It was also his first full news conference in 10 months. Obama’s recurrent tardiness in defining exactly what he wants done on a given issue  a lapse also evident in the protracted rollout of the White House’s specific health care priorities  remains baffling, as does his recent avoidance of news conferences. Such diffidence does not convey a J.F.K.-redux in charge of a neo-New Frontier activist government.

Long before Obama took office, the public was plenty skeptical that government could do anything right. Eight years of epic Bush ineptitude and waste only added to Washington’s odor. Now Obama is stuck between a rock and a Tea Party. His credibility as a champion of reformed, competent government is held hostage by video from the gulf. And this in an election year when the very idea of a viable federal government is under angrier assault than at any time since the Gingrich revolution and militia mobilization of 1994-5 and arguably since the birth of the modern conservative movement in the 1960s.

This is why the more revealing strand of Rand Paul’s post-primary victory romp may have been his musings about BP, not civil rights law  although they are two sides of the same ideological coin. He called out Obama and his administration for sounding “really un-American” in their “criticism of business.” He asked that we stop the “blame game” over the disaster and instead just accept the fact that “accidents happen.” Much as Paul questioned the federal government’s role in ordering lunch counters to desegregate, so he belittled its intrusion into BP’s toxic private enterprise. But unlike the Civil Rights Act of 1964, the role of government in corporate regulation is a continuing battle, not settled law.

Image Frank Rich Credit... Fred R. Conrad/The New York Times

Hardly were those words out of Paul’s mouth than the G.O.P. gave him the hook. He dropped his scheduled appearance on last Sunday’s “Meet the Press.” Mitch McConnell, the Republican majority leader and Paul’s newly self-appointed minder, declared that his fellow Kentuckian had said “quite enough for the time being in terms of national press coverage.” Establishment conservatives have scrambled to portray Paul as either an innocent victim of a liberal media game of “gotcha” or an inexperienced citizen-politician who made the rookie mistake of conducting campaign interviews as if they were classroom seminars in Libertarian theory. We were told he really didn’t mean what he was saying, and that he certainly didn’t represent the G.O.P. or the Tea Party movement.

Whom are they kidding? Paul rightly described his victory as “a message from the Tea Party” that it was on the march “to take our government back.” And if he doesn’t represent the G.O.P., who does if not his most powerful supporters and ideological fellow travelers, Glenn Beck and Sarah Palin? Aside from saying no to Obama, the Republican Party has no ideas except Tea Party ideas, Rand Paul ideas. And as The Economist, hardly a liberal observer, put it, Paul’s views are those of “a genuine radical who believes in paring government down to the bone.”

The president of the American Enterprise Institute, the conservative think tank, codified the mission in apocalyptic terms last weekend. The new American “culture war,” Arthur C. Brooks wrote in The Washington Post, is not “over guns, gays or abortion” but pits “the principles of free enterprise” against the “European-style statism” he accuses Obama of fomenting. It’s a war that takes no prisoners: the A.E.I. purged the former Bush speechwriter David Frum after he broke with the strict party line.