WASHINGTON (AP) — President Donald Trump appears to be taking a more positive view of Capitol Hill talks on border security, according to negotiators who struck a distinctly optimistic tone after a White House meeting with a top Republican on the broad parameters of a potential bipartisan agreement.

Appropriations Committee Chairman Richard Shelby of Alabama said Thursday's session in the Oval Office was "the most positive meeting I've had in a long time" and that the president was "very reasonable."

Down Pennsylvania Avenue at the Capitol, the mood among negotiators was distinctly upbeat, wit...