I bring this up because Alon Pinker makes a similar argument on the pages of the Jerusalem Post. [Hat-tip: TTC] The best bit follows:
What constitutes "Pro-Israel", and who appointed or commissioned anyone to cast a judgment on the issue?
Does it constitute being "Pro-Israel" to support settlements? Is it pro-Israeli to pressure Israel into signing some peace agreement and dismantle settlements?
An American presidential candidate repeatedly pledges his eternal love for and belief that a united Jerusalem should and will remain Israel's capital. He then proceeds, as president to refuse to move the US embassy to Jerusalem. Is he then considered pro-Israeli or just a pandering politician? (Answer: when he said it, he was genuinely pro-Israeli and of course he meant it, as he said in Boca Raton to Cohen and Levy during the campaign. When he didn't move the embassy, it was because of the Arab-loving pencil pushers at the State Department and the corrupt Saudis who control Washington).
But the issue deserves a more elaborate answer. So let's take a brief, broad-brush look at several past presidents who are case studies.
Richard Nixon for example. His background, education, early years in Congress, loathing of the northeast liberal establishment, borderline anti-Semitic remarks made while in the White House hardly made him a prime candidate for centerfold in "Pro-Israel Monthly' magazine. 85% of US Jews voted for Humphrey and McGovern. So was Nixon "Anti-Israeli"? No.
History will judge him as the president who rehabilitated the Israeli Defense Forces after the 1973 Yom Kippur war, launched the annual military grant to Israel and pulled Egypt away from Soviet orbit.
Jimmy Carter, now there is a real anti-Israel president. Oh really? His involvement in the Camp David negotiations was critical and indispensable in enabling Israel and Egypt to sign a peace agreement that has ever since been a pillar of stability (not much "peace" though) and part of Israel's national security posture.
Ronald Reagan, now there is a true Zionist, a man who embodies and defines pro-Israelness. No kidding.
Who sold F-15 jets and AWACS planes to Saudi Arabia? Who consolidated the US-Saudi alliance which in turn contributed to the emergence of Islamic fundamentalism and Wahabi extremism? It sure wasn't Barack Obama. Yet Jews voted for Reagan in unprecedented numbers for a Republican (35%). So Carter facilitates a peace deal between Menachem Begin and Anwar Sadat, and Jews vote for Reagan. They did so for perfectly legitimate reasons. They did so for "American" reasons because they thought he'd be a better president than Carter was.
Ah, you say, then came George H.W. Bush, AKA "41". He really hated us. Didn't his secretary of State, James Baker say: "F**k the Jews, they don't vote for us anyway." And didn't he complain about the pro-Israel lobby? And didn't he impede the loan guarantees?
But Bush 41 presided over the disintegration of the Soviet Union, the elimination of Iraq as a viable threat against Israel from the east and invaluably assisted Israel (and never asked for credit) in bringing Ethiopian Jews to Israel.
Bill Clinton was the greatest friend Israel ever had. Until he involved himself in the Israeli-Palestinian process which included recognizing the PLO, establishing a Palestinian Authority and would have entailed, had Camp David in July 2000 produced an agreement major territorial concessions. Then he was somewhat less pro-Israeli in the eyes of some.
And then there is the new greatest friend Israel ever had, the big W. himself. Contrary to all presidents before him since Truman, he called for the establishment of a Palestinian state, an end to Israeli occupation (his words, last week in Jerusalem) and further strengthened ties to the Saudis. He also attacked the wrong menace in the region. Iraq instead of Iran. Of course it's Colin Powel's fault, then Condi Rice's infatuation with Palestinian "suffering".
The point is, an American president is "Pro-Israel" when he profoundly appreciates the basic friendship with Israel, when he respects Israel as a democracy, when he truly believes in Israel as an idea and an enterprise. When his core value system and strategic outlook is similar to that of Israelis.