Let's say I'm living in Canada and am employed by the Canadian subsidiary of an american startup, and I fly down for a week to have some meetings meet up with c

Let's say I'm living in Canada and am employed by the Canadian subsidiary of an american startup, and I fly down for a week to have some meetings meet up with co-workers for some face time. Saying I'm heading down "for meetings, no productive work" seems to be a fast route for a B-1 visa from the customs agent I meet at the airport. If I actually want to do "productive work" while i'm down there, what's the best way to do that, ideally without needing to pay US taxes on earnings?