>under this president and the one who replaces him in three years.
The levels of optimism in this sentence are off the charts. The US's political systems are so weak, fragile and compromised that you don't even know if you're going to hold proper midterms or if you're going to get a civil war, the current president is threatening the FED, but sure, debts are going to be paid when it's ran by the dude that managed to bankrupt casinos.
It's time to stop magical, wishful thinking about how you want the world to be, and deal with the world as it is.
In practice, he has the authority to do anything he wants. Who is going to stop him? You? His pets in Congress? JPow's private hit squad? Clarence Thomas?
The first rule of neo-America is that you're playing the Chairman's Game[1], and there are no more rules. Its counterparties should bargain with it accordingly.
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[1] https://en.wikipedia.org/wiki/Mao_(card_game) [2]
[2] The Chairman's Game is a game invented in a university. Some say it was invented at Stanford, while others say it was invented at MIT. It was inspired by a formerly prominent, but now somewhat disgraced Chinese politician that was famous for coming up with a lot of interesting new rules for his subjects to follow, and enforcing those rules very harshly, without necessarily informing those subjects what those rules were. It's a little bit like Uno, a little bit like Crazy Eights, and the only thing that I can tell you about it is that there are times, when playing this game, when it is not a good idea to speak.
Add to that the rampant debt increase over many decades and zero political will to rectify the situation, which is why the rate of return is so much higher than in more politically stable countries such as for example Switzerland, Germany or Sweden.
2. The majority of his followers have some level of cult like adoration for him and therefore he isn't worried about losing support for radical actions.
3. Republican voters have been told to not trust the experts, news, or the opposing political party which eliminates all outside sources of information. This allows them to make claims about our debt or why we shouldn't pay it and many of these voters won't get opposing views.
4. Trump wants a massive increase in spending for the military and has cut taxes. While at the same time Republicans ran on the high debt. Not paying it by claiming it's invalid solves that.