"There's no question," Mr. Rosenberg said. "And if he decided to run in 2024, he is squeezing the toothpaste out of the tube to show just how serious he is about strengthening the U.S. - Israel alliance. I think he's using the time wisely."
Mr. Pompeo's admirers say his support for Israel, like his evangelical beliefs, is deeply felt.
But there is also a rushed sense to the Trump administration's diplomatic moves on the Israeli-Palestinian conflict as the clock runs down as if, like settlers themselves, they are frantically pouring concrete in hopes that it will set before Jan. 20. It is the same approach the lame-duck administration is taking with Iran.
In both places, some of those moves will be difficult to reverse.
Others, however, like the new labeling guidelines for West Bank products, could be undone with the stroke of a pen, said Michael J. Koplow, an analyst and supporter of a two-state solution at the Israel Policy Forum.
He called the made-in-Israel rules a "fringe issue" that would resonate with Jewish Republicans, but said Mr. Biden would pay little political price for reversing it.
"But it also seems to be the case that Pompeo supports a vision of greater Israel as a core belief, irrespective of whether or not he runs for president down the road," Mr. Koplow said.
From Jerusalem, Mr. Pompeo drove to Qasr el Yahud, an Israeli-controlled area on the banks of the Jordan River that is traditionally held to be the site of Jesus's baptism.
Later in the day, in another first for a U.S. secretary of state, he flew to an old military fortification atop a strategic hill in the long-disputed Golan Heights overlooking Syria.