A commercial flight might have left without him, but in this case, there was no rush. The private plane, on which Mr. Christie had his own bedroom, had been lent by Sheldon G. Adelson, the billionaire casino owner and supporter of Israel. At the time, he was opposing legislation then before the governor to legalize online gambling in New Jersey…

King Abdullah of Jordan picked up the tab for a Christie family weekend at the end of the trip. The governor and two staff members who accompanied him came back to New Jersey bubbling that they had celebrated with Bono, the lead singer of U2, at three parties, two at the king’s residence, the other a Champagne reception in the desert. But a small knot of aides fretted: The rooms in luxurious Kempinski hotels had cost about $30,000; what would happen if that became public?…

That tendency — the governor himself says he wants to “squeeze all the juice out of the orange” — has put him in ethically questionable situations, taking benefits from those who stand to benefit from him…

Last month, Mr. Christie prompted a state ethics inquiry after he flew to at least three games of the Dallas Cowboys, his team since boyhood, on the plane of the owner, Jerry Jones, whose company had received a contract with the Port Authority of New York and New Jersey after the governor recommended it.