As the midterm “blue wave” threatens to further complicate US-China relations, American agricultural exporters are calling on Washington to focus on delivering the trade deals already agreed with Beijing and ending a period of damaging policy uncertainty. With shipments of key products such as soybeans needing to be planned months – or sometimes an entire year – ahead, US farmers are in need of stability after last year’s trade war. “Agriculture is ... an industry with long production cycles, so...