'What specific laws the president is breaking?', you ask.
Wait a while, and things may become clearer for you.
Already, Trump has sustained his first set-back in court. Trump's executive order to halt travel from seven Muslim-majority countries immediately caused so much confusion and obvious injustice that a federal judge has had to grant a stay on deportations.
And you think it is 'Neko' who is "totally befuddled", rather than yourself? 
Time will tell.