Because the US Congress does not give him the required funds for a wall on the border to Mexico, US President, Trump National state of emergency. The Opposition announced resistance.
US President Donald Trump has to declare a National state of emergency, in order to get enough money for the construction of a border wall between the U.S. and Mexico. Trump had demanded from the Congress, nearly six billion dollars for the barrier - in the new budget only amounts to just under 1.4 billion. The state of emergency Declaration Trump bypasses the Congress and could deduct money from the budgets of other ministries.