President Trump’s recent executive order restricting Americans from investing in companies linked to China’s military complex has set up a battle in the highest ranks of government over how wide the list should be.Since November, the White House secured US investors from buying into 35 Chinese companies the pentagon has categorized as aiding China’s defense, intelligence and security apparatus. It fueled selloffs of Chinese stocks and bonds, pushed index firms to drop companies from marquee benchmarks, and pressed Wall Street to reevaluate risks from investing in China.Now, the US government is at odds over whether the blacklist should include branches of the companies. Another battlefield is over whether associates should be included. The question affects how much teeth the ban will bear.