WASHINGTON (Reuters) - The Trump administration on Monday strengthened an executive order barring U.S. investors from buying securities of alleged Chinese military-controlled companies, following disagreement among U.S. agencies about how tough to make the directive. Slideshow ( 2 images ) The Treasury Department published guidance clarifying that the executive order, released in November, would apply to investors in exchange-traded funds and index funds as well as subsidiaries of Chinese companies designated as owned or controlled by the Chinese military. The “frequently asked questions” release, posted on the Treasury website on Monday, came after Reuters and other news outlets reported that a debate was raging within the Trump administration over the guidance. The State Department and the Department of Defense had pushed back against a bid by Treasury Department to water down the executive order, a source said. Secretary of State Mike Pompeo said Monday that the announcement “ensures U.S. capital does not contribute to the development and modernization of the People’s Republic of China’s (PRC) military, intelligence, and security services.” “This should allay concerns that U.S. investors might unknowingly support (Chinese military-controlled companies) via direct, indirect, or other passive investments,” he added. Specifically, some media outlets reported that Treasury was seeking to exclude Chinese companies’ subsidiaries from the scope of the White House directive, which bars new purchases of securities of 35 Chinese companies that Washington alleges are backed by the Chinese military, starting in November 2021. The guidance released on Monday specifies that the prohibitions apply to “any subsidiary of a Communist Chinese military company, after such subsidiary is publicly listed by Treasury.” It added that the agency “intends to list” publicly traded entities that are 50% or more owned by a Chinese military company or controlled by one. “Treasury’s published FAQ represents a clear victory for the U.S. security community in its determined effort to preserve strong capital markets sanctions associated with [the executive order] — the first of their kind,” said Roger Robinson, a former White House official who supports curbing Chinese access to U.S. investors. The November executive order sought to give teeth to a 1999 law that mandated that the Department of Defense compile a list of Chinese military companies. The Pentagon, which only complied with the mandate this year, has so far designated 35 companies, including oil company CNOOC Ltd and China’s top chipmaker, Semiconductor Manufacturing International Corp. Since the November order, index providers have already begun shedding some of the designated companies from their indexes. Reporting by Alexandra Alper, David Shepardson and Humeyra Pamuk in Washington and Karen Freifeld in New York; Editing by Stephen Coates and Leslie Adler Our Standards: The Thomson Reuters Trust Principles. MORE FROM REUTERS The Treasury Department published guidance clarifying that the executive order, released in November, would apply to investors in exchange-traded funds and index funds as well as subsidiaries of Chinese companies designated as owned or controlled by the Chinese military. The “frequently asked questions” release, posted on the Treasury website on Monday, came after Reuters and other news outlets reported that a debate was raging within the Trump administration over the guidance. The State Department and the Department of Defense had pushed back against a bid by Treasury Department to water down the executive order, a source said. Secretary of State Mike Pompeo said Monday that the announcement “ensures U.S. capital does not contribute to the development and modernization of the People’s Republic of China’s (PRC) military, intelligence, and security services.” “This should allay concerns that U.S. investors might unknowingly support (Chinese military-controlled companies) via direct, indirect, or other passive investments,” he added. Specifically, some media outlets reported that Treasury was seeking to exclude Chinese companies’ subsidiaries from the scope of the White House directive, which bars new purchases of securities of 35 Chinese companies that Washington alleges are backed by the Chinese military, starting in November 2021. The guidance released on Monday specifies that the prohibitions apply to “any subsidiary of a Communist Chinese military company, after such subsidiary is publicly listed by Treasury.” It added that the agency “intends to list” publicly traded entities that are 50% or more owned by a Chinese military company or controlled by one. “Treasury’s published FAQ represents a clear victory for the U.S. security community in its determined effort to preserve strong capital markets sanctions associated with [the executive order] — the first of their kind,” said Roger Robinson, a former White House official who supports curbing Chinese access to U.S. investors. The November executive order sought to give teeth to a 1999 law that mandated that the Department of Defense compile a list of Chinese military companies. The Pentagon, which only complied with the mandate this year, has so far designated 35 companies, including oil company CNOOC Ltd and China’s top chipmaker, Semiconductor Manufacturing International Corp. Since the November order, index providers have already begun shedding some of the designated companies from their indexes.