Donald Trump Jr., Greg Gianforte and Sen. Steve Daines, R-Mont., from left, gather together at the end of a campaign rally for Gianforte in Hamilton. Gianforte kept Trump at arm’s length when he ...

In late March, David Gianforte made an appointment to talk about three bills with Montana’s Republican governor, Greg Gianforte, who happens to be his father. David, 32, sat down in the governor ...