PHILADELPHIA — Congressional Republicans are hoping for a message of unity and focus from Donald Trump in his first appearance before them as president.

Trump was to speak Thursday to House and Senate GOP lawmakers at their annual policy retreat. Despite a rocky start to his administration, many lawmakers are optimistic about delivering change in a new era of GOP control over Washington.

They would like to see a Trump committed to their agenda and results, not a president who veers off course into conspiracy theories about voter fraud or who keeps litigating the size of his inaugural crowds.