In an exclusive article for our sister site The Parliament magazine Ted Malloch said the bloc has become “undemocratic and bloated” by bureaucracy and “rampant anti-Americanism”.
Mr Malloch suggested it would be “against” the United States’ national interest to promote the EU on its current trajectory towards a “socialist, protectionist, United States of Europe”.
And he called for each member state to put their values of democracy and freedom to the test by holding referendums on EU membership.
In January President Trump hailed Brexit as a “blessing to the world” that would “end up being a fantastic thing for the United Kingdom”.
It came after he caused a stir in Brussels by attacking the European Union as a “vehicle for Germany” that other nations would leave.
Mr Malloch, who is the President’s pick to become US ambassador to Brussels, said it was time to “re-evaluate” America’s relationship with Europe.
He accused the “globalist elite” in the EU of being “detached from the people and therefore entirely anti-European”.
And he argued that Brussels “openly works against US interests abroad”, including in the Middle East, Israel, Cuba and the United Nations and warned that President Trump was “on watch – and looking”.
“The failure of the European integration project should by now be self-apparent to everyone. This is simply not something Churchill or Roosevelt would countenance,” he wrote.
“The European Union has become undemocratic and bloated by both bureaucracy and rampant anti-Americanism.”
He continued: “It may be time to re-evaluate key US assumptions about Europe. This means America should reappraise its entire relationship with Europe and its future union or disunion.”
Mr Malloch, a professor at Henley Business School, said the US should consider whether the EU is in need of a “total redefinition”, and should assess what the dangers are of a “failing EU”.
“We do know that the US and the UK are different from Europe: we want democracy and accountability, while the EU is intrinsically undemocratic and unaccountable,” he said.
“So should the US continue to promote such a damaged European model, which is alien to our own traditions? Is it not working against US interests to do so? Most certainly it does not put America, first, as Trump has now designated.”
Mr Malloch said nobody wanted Europe to fail or “instantly disintegrate”, but he called for every member state to put the question of continued membership to their people.
“Put the EU to a referendum vote in every member country. It is time for greater scepticism and realism about the European Union and its not so hidden agenda and ‘ever closer union’,” he said.
Elsewhere in his attack, Mr Malloch reiterated President Trump’s concerns about burden sharing in Nato and accused those states not spending 2% of their GDP on defence of “free riding on US largesse”.
He accused Brussels of being “ungrateful” towards the US, hit out at the “flawed” euro, and reiterated Mr Trump’s view that the bloc is “titled” towards Germany’s interests.
And he alleged that the European Commission seeks to regulate cases involving large foreign companies which threaten or undermine the business interests of the European Union.
“The US needs in these first days of the Trump administration then to re-examine its historical policy toward European integration from the lens of America, first. The present policy cannot continue as the assumptions are flawed and no longer bear fruit,” he said.
“Of course the Transatlantic Alliance must continue. Good European-American relations are absolutely essential. But European integration is not at all in America’s interest…
“Brexit gives the US an opportunity for pause and an appreciation that the EU is actually weak and getting weaker. It could under certain scenarios even come apart.”
He concluded: “The US therefore needs to bolster its existing and strong relations with each of Europe’s member states – not all of which even belong fully to the EU. The US is not anti-European…
“In Trump’s world the future is not what it was. Our dealings with Europe should also change, accordingly.”