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I don't understand yet what kind of mechanisms and laws are going to be by the government of the United States to force people from other countries to pay for the wealth of the new America Trump wants to build, though. The United States does not have any right or power over other nations therefore, Trump cannot effectively tax money off citizens of countries like China, Iran, Russia, Venezuela or others. Tariffs are paid by the people of the USA and the extra revenue will co tongue to come from citizens.
There is no chance Trump will get rid of the IRS and replace it by a new department which does not have any power to tax people living in countries which are foes of the USA.
During the whole term of Trump, people will continue to be taxed by the IRS as usual, because money needs to come from somewhere
People of other countries love selling to the USA. So, they will absorb the tariffs somehow. This means that the US will get tariff money to offset IRS taxes. Also, there is all the corruption money being found by DOGE, which will be cut off, making government to run more efficiently. No more IRS taxes necessary.
Since the potential of IRS taxes is what the Fed Res Bank uses to determine how much money the US gov can borrow from the bank, no more IRS means that govt will not be able to borrow any more money. This will dry up a whole lot of funds from the Fed Res, and that along with the gold troubles it is having might even collapse it... leaving the US Treasury to pick up banking for the people of the US.
