Why do you believe there will be no wall or military (national guard) guarding the border?
The wall was Trump's signature mandate?
There are no Mexicans coming across at the moment in fact there are more people exiting the country than entering but he doesn't care about facts because it's one of his two central mandates (wall and trade deficits). Both are just red herrings as far as the rest of congress are concerned though used to stir up his base (although he truly believes in them because he's an imbecile).
When the national guard have been sitting there for a little while twiddling their thumbs and the Dems regain a lot of power in November that wall will be as far away as ever.
The only things he has achieved is tax cuts for the rich and Gorsuch as supreme court judge and giving large chunks of public land for free to mining companies all of which the Republicans wanted but anything else needs to be ratified, look at the travel ban that got overturned as soon as it was ordered.
The Republicans are seeing a massive blue wave against him in all these special elections but what really is shocking is the swing in areas that are considered his base. Alabama, Wisconsin this week, Pennsylvania 16th, the pre vote in Texas, these are all strongholds for Republicans and the they are being cleaned out.
An example of his incompetence is his lack of understanding of trade wars, by throwing a 25% tax on goods entering the country that becomes less product being sold in places like Walmart for example so his own economy shrinks as well as China's. He even admitted that the American people will feel pain over these tariffs but it will make them stronger in the long run, the idiot doesn't get that the people don't want to hear that they are going to feel pain.