Any fool could see that.

"Any fool can be a politician if he was born into a political family." "That's nonsense!"
「政治家の家系に生まれさえすれば、どんなばかでも政治家になれるんだ」「そんなのおかしいよ」

Any fool can see it.
どんなばかでも分かるさ。

Any fool could find it.
どんなばかでも分かる。

Any fool could see that.
それはどんなばかでも分かることです。