They won't be able to keep saving it. At some point the USD will reach the point of no return when people actually wake up and start dumping it to buy goods, metals, crypto, whatever they can just to get rid of the dollar. At this point it will be too late for you to do anything if you are still a dolar holder at that point. Market crashes come suddenly and hit fast. One day it's all fine the next it's people standing in lines in front of their banks, and all ATMs are empty. You wake up, watch the news, and it's all in chaos.

Judging by what we've seen in the past few weeks, especially the past few days, the volatility is just crazy.
Also how Trump is publicly taking on the FED is unprecedented in US Presidents history. Is something big about to happen?
No president wants to deal with the bad press that would come with letting the markets fall by it's own weight instead of inflating balloons to keep it from crashing into the ground as all presidents have done.
But if there is someone crazy enough to do it it could be Trump. He basically has two options:
1) Keep going with the QE's, "save" the stock market, but get critics by the ones that know what's going on.
2) Let markets crash by avoiding more QE's, blame the FED, make it clear to the public that the FED is a pretty obscure thing and work from there.
But let's not get too excited. Trump is most likely another Zionist puppet, so he isn't going to actually do nothing other than some controlled dissidence to keep the Alex Jones fanboys happy.