Based on an on-line petition rather than a parliamentary bill, that debate was always a non-starter, Naomi, as regards there being any prospect whatsoever of an entry-ban on Trump being imposed.
On the other hand, I can't see him becoming "acceptable" to most British people, given that extreme right-wingers are rarely given support here for long, as our home-grown Oswald Mosley discovered.
Still, we'll see in due course whether he'll be (a) the Republican candidate...(b) elected President...and (c) finally accepted here.