US judge temporarily blocks Trump's order to change birthright citizenship
A US judge temporarily blocks Donald Trump's order to change birthright citizenship, which was slated to take effect in February
The judge calls the order "blatantly unconstitutional" - the president says he will appeal the decision
Meanwhile, Trump orders the declassification of files relating to the deaths of John F Kennedy, Robert Kennedy and Martin Luther King Jr
The president also pardons 23 anti-abortion activists as he signs another flurry of executive orders in the Oval Office
Speaking at the World Economic Forum in Davos, Trump threatens tariffs worth "trillions of dollars" if the rest of the world does not make its products in the US
To gasps in the hall, he says Canada could avoid tariffs if it chooses to "become a state" of the US
US judge temporarily blocks Trump's order to change birthright citizenship