Even during his election campaign, Trump repeatedly spoke out for the need to limit migration flows from Central America. The border wall is one of the key points of his presidential program. But in this case, its construction is only a formal reason for the possible introduction of a state of emergency.
In fact, Trump's task is to overcome the resistance of the US Congress to the implementation of its program. The wall is just an excuse. Now the US Democratic Party is stubbornly resisting any attempts to build the wall, although the cost of this structure is estimated at only $ 5,6 billion, which is completely insignificant money for Washington.
It turns out that the question of building a wall is of fundamental importance for Trump in terms of confirming his worth as a president implementing a given program, and for Democrats, as a way to tell the head of state that he needs to listen to the opinion of Congress.
So, already now the conflict between the president and Congress over the budget of the country has gone very far. During the conflict, the activities of federal ministries and departments were virtually blocked, which in itself is a big problem for the smooth functioning of the US state system.
If Trump manages to introduce a state of emergency, he will receive very serious powers, and his administration will turn into virtually the only authority in the country. True, of course, this will give his opponents the opportunity to accuse the president of usurping power. And the reason for introducing an emergency was not very solid.