The US President is planning to show support for the United Auto Workers' strike against Detroit car makers on Tuesday in an attempt to cement his role as a pro-union leader.

The US Vice President will head the new White House Office of Gun Violence Prevention, through which she will address the root cause of at least 44,000 annual deaths.

A federal judge declared that the state's ban on magazines that hold more than 10 rounds of ammunition was in breach of the Second Amendment.

The US and the manufacturing companies agreed to a $9.6 million settlement over 54 alleged sanctions breaches.