De Gaulle thought the UK would be a US mole in the EU. He was proven right many times over.
Good try, the Canadian's PM's riposte to the ungrateful creep's attempt at causing trouble in Canada was perfect, the truth is really West Germany as was, was growing economically stronger and faster than expected, not least by France, DeGaulle the bad European could just stomach that threat to HIS view of the EEC, French domination, kind of a local Algeria recently given up him (his few right moves only possible by him ascending to power partly on promising the fractious and hostile expats and their sympathetic and often powerful supporters in France itself, that he would not do that, remember that terror group they formed, not least to kill him?)
The rise of the latter day Vichy LePen's had their origins right there.
So he would not have relished another major economy that was not France also joining the EEC, another diminishing of French domination, you could see why for instance the Benelux nations wanted the UK in, not just them either. West Germany too.
Just not France, not very unifying for Europe was it?
Guess what, they did not tend to see the UK as a US 'mole', just the paranoid Anglophobes in the court of CdG.
Besides, France was not too proud to take that US Marshall cash, then Military Aid cash, then the bankrolling of the doomed attempt to hang on to Indo China.
Was France a 'US Mole' then? Certainly relied on them, including in Algeria for some material support, though many in the US were unhappy about that.