What to know

• A two-day Irish visit blurs the lines between Trump's presidency and personal business interests as he and his sons attend the Irish Open golf tournament, held on a Trump Organization course.S1
• Breaking with decades of U.S. neutrality on the issue, President Trump said Saturday that it would be “fantastic” if Ireland unified. The U.S. brokered and has long supported the 1998 Belfast Agreement, also known as the Good Friday Agreement, which brought a...S2