A battle over imported basa catfish from Vietnam is sizzling in the Deep South, but federal officials say they have no plans for a nationwide ban, as called for in some Southern states.

• 一场针对进口越南巴沙鲶鱼的大战，正在美国南方内地打得如火如荼，但联邦官员表示，他们不打算照南方若干州的主张，下达全国性的禁令。