Harvard University is challenging President Donald Trump’s move to block foreign students from coming to the United States to attend the Ivy League school, calling it illegal retaliation for Harvard’s rejection of White House demands.

The temporary reprieve came as the US judge ruled that Harvard would face "immediate and irreparable injury" if the proclamation went into effect.

A federal judge late Thursday temporarily blocked a proclamation by President Donald Trump that banned foreign students from entering the U.S. to attend Harvard University