The US government has revoked licences which allowed Chinese telecommunications giant Huawei to buy older chips from the US semiconductor companies Qualcomm and Intel, financial news agency Bloomberg reported. The corresponding supply licences have been withdrawn, the chairman of the Foreign Affairs Committee in the US House of Representatives, Michael McCaul, told Bloomberg. The US Department of Commerce only confirmed that some export licences for Huawei had been withdrawn, but did not specify which companies were involved. However, according to McCaul, the committee was informed about the w…