Maybe, but like I said, everyone else has been doing their own take on the "Build a Wall" idea in the past few years. It's not hard to pinpoint the likeliest origin of this particular trope.
Like I said, there's a pretty huge difference between, on the one hand, a fraudulent demagogue using an impossible wall as a simple talking point for fooling his gullible backers, and on the other hand, the government
actually walling in a segment of the population. Stories that have commented on the Trumpian "wall" rhetoric have generally used it that way, as empty fearmongering rhetoric, like when the senator in
Supergirl season 1 rallied her base of anti-alien bigots by talking about building a dome over the United States. But while there are some obvious resonances to current events, the
reason that current events are so scary to informed people is because we remember history. We remember the walls that actually
have been built and the oppressive regimes that have used them. Social commentary about the present also entails reminding audiences of the parallels in the past. Telling a story like this is not
exclusively about Trump, however much it may resonate. Because all this has happened before, which is why we
know it's bad.
Really, if anything, Chase Graves's willingness to suspend freedoms and rights in the name of security resonates far more with the Bush/Cheney administration's actions and everything we've gone through as a nation since 9/11 than it does with anything Trumpian. Trump couldn't care less about the security of anyone but himself; he's motivated by greed and racism. So, yes, the bearded Fillmore-Graves guy and his "fake news" excuse for attacking the press is a commentary on a dangerous current trend that Trump embraces, but Chase's arc is about something deeper and longer-standing than that, something we've been wrestling with as a nation for the past 16-plus years, and that also came into play in WWII (particularly for Japanese-Americans) and the Cold War. Chase is nothing like Trump, because he knows what he's doing is awful and he clearly hates having to do it. But there are others under him who are quicker to embrace the power trip.