https://www.reuters.com/article/us-usa-china-huawei-tech-travel/u-s-weighs-china-travel-warning-over-huawei-case-sources-idUSKBN1OA2BX >The United States is considering issuing a new warning to U.S. citizens, including business executives, traveling to China after Canada arrested a senior Huawei Technologies Co Ltd [HWT.UL] executive at Washington's request, two sources said on Tuesday.