RAMALLAH, West Bank — My family and I moved to Washington in April 2017, just a few months after President Trump took office. I’d been sent as the head of the Palestine Liberation Organization’s general delegation to the United States — effectively the Palestinian ambassador in Washington.

At the time, the new administration said it wanted to forge a comprehensive and lasting peace in the Middle East. This seemed like a long shot given Mr. Trump’s positions and his close association with some of Israel’s most extreme American supporters. Still, we Palestinians wanted to give this effort a chance.

One of my first tasks was preparing for a visit in May by the Palestinian president, Mahmoud Abbas. My team and I began to meet with officials at the White House, the State Department and Congress. We also held encouraging meetings with universities, churches, think tanks and the news media, in which I saw how American opinions are changing on the Palestinian struggle for freedom and independence.

At the same time, my family began to get used to our new home. My son, Saeed, then 6, and my 5-year-old daughter, Alma, began school. My wife, Suzan, who trained as a biomedical scientist, took time off as our children adjusted to their new life and I started my demanding job. In no time, we all made many wonderful American friends. It was a hopeful new beginning.