Chaim has spoken about how John Adams was the most Pro-Israel President but look at the part below I bolded of something he wrote.
John Adams (1797-1801)
"I will insist that the Hebrews have done more to civilize man than any other nation."
(Letter from John Adams to Thomas Jefferson)
"Farther I could find it in my heart to wish that you had been at the head of a hundred thousand Israelites ... and marching with them into Judea and making a conquest of that country andrestoring your nation to the dominion of it. For I really wish the Jews again in Judea an independent nation. [I believe ... once restored to an independent government & no longer persecuted they [the Jews] would soon wear away some of the asperities and peculiarities of their character & possibly in time become liberal Unitarian christians for your Jehovah is our Jehovah & your God of Abraham Isaac and Jacob is our God.]"
(Letter to Mordecai Manuel Noah, 1819)