Your pose of superiority would be less laughable if you weren't such an ignoramus. Yes, Trump's ability to force Mexico to pay for the wall is as much dependant on Congress passing a law as his ability to end Obamacare was dependent on Congress passing a law to do that. If you were actually up to speed on this you'd know that his plan to do it involves either taxing remittances for the cost of the wall or stopping remittances to pressure MX to make the desired payments and, no, the Executive branch can't impose such a tax on its own. If you imagine there is some Constitutional or "international law" barrier to this you are deluded.