The Chinese telecoms firm Huawei is suing the United States for excluding it from government contracts.
The firm argues a law passed last year is unconstitutional.
In a statement on Thursday, the company said it had filed a lawsuit in the district court in Texas, calling for the ban to be overturned.
From Washington, Daniel Ryntjes reports:
US and Iran launch new attacks as they wrestle for control of Strait
The US military said on Monday it destroyed six Iranian small boats and intercepted Iranian cruise missiles and drones as Tehran sought to thwart a new US naval effort to open shipping through the Strait of Hormuz.
Israeli strikes kill two Palestinians in Gaza, medics say
Israeli strikes killed at least two Palestinians and wounded several others in the Gaza Strip on Tuesday, health officials said.
Blast at fireworks factory in China's Hunan kills 26, Xi calls for probe
A blast at a fireworks factory in China has killed at least 26 people and injured 61, flattening buildings and sending towering clouds of smoke into the sky, and prompting President Xi Jinping to order a thorough investigation, state media reported on Tuesday.
Russian attack kills 5 at Ukraine's Naftogaz gas production facilities, officials say
A Russian overnight missile and drone attack on Ukrainian gas production facilities killed five people, including two rescue workers, Ukrainian officials said on Tuesday, as Kyiv and Moscow exchanged rival ceasefire proposals.
Seven cases of deadly hantavirus confirmed or suspected on stranded cruise ship
Two cases of the deadly hantavirus have been confirmed, and five more are suspected among people who were on a luxury cruise ship now held in the Atlantic near Cape Verde, the World Health Organisation said in its most detailed update on the outbreak.
