There is utterly no doubt, whatsoever.
Nor is there any doubt that Trump is a betrayer of American values, and an enemy of the best of Western values.
Дональд Трамп — агент России. Дональд did not help the Russian bear take Ukraine, although he sure could help Ukraine defend itself more. No, what the real question is, is why do so many of his actions help the Russians. The horrific demands on Denmark for Greenald are a prime example.
The only question is whether is because he sympathizes with the Russians, or perhaps Putin, naturally, or if his collaboration with underlying Russian goals is accidental as he's an ignorant demented open vessel to 19th Century views, or if they have something on him.
We don't know.
We do know that he's betraying the nation's values. Indeed, he's betraying the nation itself.
The only question is why.