Two years in the past, Jacob Helberg, a little-known tech trade adviser, convened a dinner between lawmakers and a small group of Silicon Valley insiders on Washington’s Embassy Row. The casual supper membership, which might ultimately obtain funding from billionaire investor Peter Thiel’s enterprise agency, was not distinctive for its wealth or clout — the individuals concerned had loads of each — however for its members’ eagerness to eschew the trade’s long-held beliefs of boundaryless know-how for an alternate imaginative and prescient rooted in American nationalism and an anti-China would possibly.