Effects of printing money in the short run

Why can’t the US government just buy some more paper and print more US dollars (faster and faster) to pay our expenses like Mexico? Every time that we print dollars, the value and buying power of each printed dollar reduces proportionately. One US Dollar that would buy about 8 Mexican pesos in 1960 can now exchange for as much as 15,000 of the 1960 Mexican pesos today. This is equivalent to about 187,500% inflation over that period. A $2.00 USA loaf of bread would then cost $3,750.00 today if the USA implemented Mexican type economic monetary policies.

The FED purchased some paper and printed those US Bonds and other security instruments that they occasionally auction off to get US dollars back from the Industrialized countries that US importers paid with US dollars to manufacture the consumer goods that US citizens purchased and consumed.