https://www.reuters.com/article/us-huawei-tech-usa-filing/huawei-asks-u-s-court-to-declare-defense-bill-unconstitutional-idUSKCN1SZ08C >China's Huawei Technologies Co Ltd has filed a motion for summary judgment in its lawsuit against the U.S. government, according to a court filing in the United States, in the telecoms equipment maker's latest attempt to fight sanctions from Washington that threaten to push it out of global markets.