captioning sponsored by newshour productions, ll >> yang: good evening. i'm john yang. judy woodruff is away. on the "newshour" tonight, mexico begins to impment the immigration deal it made with the trump administration, but how much has really changed? we break down the agreement on its first day in effect. then amy walter and tamara keith bue here to analyze anothe weekend on the presidential campaign trail and congress's response to the mueller report. plus: stone by stone. with the memory of the fire that consumed paris's notre dame cathedral still fresh, stone masons work to repair the national cathedral in washington, d.c., damaged by an earthquake in 2011. >> you know it lasted only 58 seconds, and when it ended we