Anti-Americanism is on the wane at last. All over the world, Americans are being fêted once again as farsighted, liberating heroes.

Al Gore has won a Nobel Peace Prize, an Oscar and an Emmy, the triple crown of recognition from the self-adoring keepers of bien-pensant, elite liberal, global orthodoxy. Michael Moore is treated like a prophet in Cannes and Venice, as he peddles his tales of an America that poisons its poor, sends its blacks off to war and shoots itself. Whenever a loquacious Dixie Chick or a contumacious Sean Penn utters some excoriating remark about the depravity of his or her own country, audiences around the world nod their heads in sympathetic agreement. Bill Clinton, of course, is a god. Though protocol dictates that he may not say things that are too unkind about the country he once led, a nod and a wink will suffice.

It has always amused me that the same people who denounce America as a seething cesspit of blind obscurantist bigotry can’t see the irony that America itself produces its own best critics. When there’s a scab to be picked on the American body politic, no one does it with more loving attention, more rigorous focus on the detail, than Americans themselves.

It has always been this way. The fiercest and most effective opponents of US foreign policy in the 1960s were not the students in Paris or the Politburo in North Vietnam. They were Jane Fonda, Bobby Kennedy and Marvin Gaye.

Today I can only laugh when I see the popular portrayal of George Bush’s America in much of the international media. Supposedly serious commentators will say, without evident irony, that free speech is under attack, that Bush’s wiretapping, Guantanamo-building, tourist-fingerprinting regime is terrifying Americans into quiet, desperate acquiescence in the country’s proliferating crimes.

The truth is that America not only harbours the most eloquent and noisy anti-Americans in its own breast, it provides a safe haven for people to come from all over the world to condemn it.

Take a stroll through almost any American university campus and you will hear a cacophony of voices in a hundred different languages, slamming everything America does, from fast food to hedge-fund capitalism. For years one of America’s most celebrated academics was Edward Said, the Palestinian agitator-cum-professor, who lived high on the hog at Columbia University, near the pinnacle of the American intellectual establishment, dispensing his wisdom about US wrongs in the Middle East.

Hollywood is the global mecca for angry denouncers of everything American. From all over they come, forcing themselves to live in their green-lawned mansions carefully tended by cheap migrant labour from south of the Border. This autumn, unsuspecting Americans (and everyone else, of course) will be treated to an especially unsettling stream of antiwar, anti-American propaganda, much of it produced in Hollywood by foreigners – such as this weekend’s likely box-office hit, Rendition.

And where would the world get its daily media diet of horror stories about what a ghastly country the place is if its reporters weren’t all comfortably pavilioned inside America, where they make a generous living happily devouring the hand that generously feeds them?

It’s true that self-criticism is always more effective than an outsider’s observations. Let’s be honest, how much real moral weight do Vladimir Putin or Mahmoud Ahmadinejad carry when they decry American motives and actions? All but the most unhinged of America’s critics know, deep down, in a part of the brain they try not to consult, that whatever they may think of the Bushitler in Washington, they don’t feel comfortable agreeing with the ex-KGB hatchet man of the Kremlin or the Holocaust-denying Dr Strangelove sitting astride his Islamist bomb. It sounds so much better when Al Gore or Michael Moore says it.

But ask yourself why that is. Isn’t it because they know that only American criticism really carries legitimacy? Only a country that enthusiastically and self-woundingly honours Voltaire’s old dictum about free speech can really be trusted to cast judgment on anything.

There’s another, more important aspect to the world’s affection for those in America who are most critical of it. The Americans who win global approbation in Oslo or at the UN are not simply critics of current American policy. They want to construct an international system that will for ever prevent the US from pursuing its own objectives, a system designed to dilute, counterbalance and constrain America’s ability to govern itself. They prefer a world in which American democracy is subordinated to a kind of global government, rule by a global elite, tasked to make decisions on everyone’s behalf in the name of multilateralism.

Al Gore wants the US to give up its economic autonomy and submit to rule by binding international obligations to curb its carbon emissions. Some of the Democratic candidates for the presidency want to tie down the American Gulliver under a web of global treaties. The British Government, if recent speeches by ministers are to be believed, is now apparently seriously committed to the idea that only the UN has the legitimacy to determine how nations should behave. In other words, that a system that gives vetoes to China and Russia and honours the human rights contributions of countries such as Syria or North Korea should be accorded a full role in the promotion of the dignity of mankind.

There’s a larger irony in all this. Even as the US demonstrates the openness of its own society, its unrivalled capacity for self-examination and self-correction, a free system based on the absolute authority of the rule of law, it is told it must submit itself to the views of Moscow, Beijing, and Brussels.

Fortunately, while the American system may be forgivingly tolerant of people with wild and dangerous ideas, it doesn’t generally let them run the country.

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