system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: If Donald Trump is really capable of doing half of the things democrats are afraid he will, then he at least possesses the agency to be president

Let me preface this by saying that I'm not a Trump supporter and will not be voting for Trump in the presidential election. On the other hand I'm noticing a lot of conflicting criticisms of Trump, especially concerning foreign policy, in that he is incompetent and not capable of affecting any real change, and the same time that he's some sort of modern day Hitler who will irreversibly change libel and immigration laws. 

I believe that if Trump is really capable of keeping anyone who practices Islam, the world's second largest religion, from entering the country, then he would at least be living up to him presenting himself very effective politician. This is in contrast to common (and I believe justified to an extent) criticism of Obama, who made a lot of promises to close Guantanamo but in the end wasn't capable of it, and also got cock-blocked by congress at every turn.

The flipside is, if he isn't capable of those things, then a good portion of this doomsday talk about the election is really overblown, and it doesn't really matter that much in the end who gets elected.
gpt
There is a middle ground here - you can believe someone to be incapable of actually accomplishing something but still be aware of the damage that would be caused if they attempted it.

Take the Muslim ban as an example.  There is simply no way that such a ban would ever get through Congress as it stands today, much less stand up to a SCOTUS challenge if it was somehow enacted.  That policy just can't happen in America.  However, simply trying to get such a policy passed would degrade our relationships with may of the Muslim countries around the world - How would Saudi Arabia feel about us if we had just tried to prevent their citizens from emigrating to the US?

The position of POTUS is much more than just the actual job responsibilities.  He is the figurehead for America - his words and his actions are representative of our country on the world stage.  Merely attempting to do many things that he is claiming to do would be very bad for US foreign policy, successful or not.