Obama uses questionable executive orders-- everyone's like "wait, he can do that?..", but for the most part everyone lets it slide.
Trump uses questionable executive orders-- massive protests and unrelenting backlash; the number of times he's called a "racist" multiplies; issue is brought to court
IMO the only mistake made in the order was giving preference to Christian refugees over Muslims Not sure if this is even true; only worsens the political statement people perceive; doesnt make logical sense; theres no way to objectively distinguish religion; and its kinda a 1st amendment issue.