China has introduced a sweeping anti-terrorism law that has alarmed human rights groups and prompted some US politicians to propose new laws aimed at preventing a repeat of last year’s Boston Marathon bombings.
The measure, the Anti-Terrorism Law, was passed in February by a majority of the country’s legislative body and was widely condemned by international rights groups.
It bans the importation of weapons, ammunition, propaganda materials, propaganda videos and videos of terrorism.
The US Senate has approved it by a narrow margin.
The bill has already been blocked by a federal judge in the District of Columbia.
US President Donald Trump has been criticized for his reaction to the attack on the Boston Marathon finish line.
The new law, which was passed amid heightened tensions between Beijing and Washington over the North Korea nuclear crisis, is being seen as a sign that the US is moving in a different direction in the fight against terrorism.
Al Jazeera’s Nick Carey reports from Washington, DC.