The US Congress is close to tightening oversight of foreign investment in American companies that while unlikely to significantly reduce Chinese purchases may mean a more stringent review of deals in sectors such as technology. CFIUS, an interagency committee, reviews potential foreign investment in American businesses to ensure national security is not compromised. "Chinese investors should anticipate CFIUS reviews in any investment in the high-tech sector. It is important to note that Chinese investments will still be approved, but the process may be longer, and Chinese investors may find certain industries effectively 'off limits,'" said lawyer Christopher Brewster of Stroock & Stroock & Lavan LLP in Washington. "By contrast, Chinese investment is a target of the reforms," Brewster said.