Since $3 trillion is the plan, one can reasonably expect that it will evolve to say a $9 trillion reality. This implies more printing of fiat.
There is a big difference in the dollar's reach and spread from government spending in comparing the new deal era to now. For instance, road building once carried a crowd; not anymore.
Another significant difference re new deal era versus now: The new deal era - a dollar spent in America usually put Americans to work; now - the spent dollar (just looking at Walmart) seems to employ a significant amount of Chinese. That aspect won't change in the near to medium future.
A look at California's construction of a high-speed rail.
https://city-journal.org/high-costs-...igh-speed-rail