I think the idea is that Trump wields enormous (unprecedented?) control over the members of his party, and thus effectively controls both houses of Congress for at least the next two years. I assume he'll quickly get whatever legislation he wants sent to his desk for signature. I'm wondering how long it takes before the Senate invokes the "nuclear option" on what still requires a filibuster-proof majority to pass.
He has a one seat majority in the House. That means he needs actual complete buy in from every single Republican house member to pass something if the Democrats completely oppose it.
He had more than that during his last term, so this term should be harder to get things done then last time.