I'd see the problem if it worked how I've sometimes seen it described, where rich people and banks are just getting free gifts of cash, but that's not accurate.
Congress could give the Fed the power to, rather than just buy bonds (or whatever it is they do) introduce money to the economy simply by giving everyone money.
I understand that it is not exactly true that the rich are getting free money for nothing. But the whole reason we're talking about this here is that someone pointed out that all the new money supply from the Fed is finding its way straight to people and corporations that don't have anything better to do with it than buy assets, the prices of which continue to grow as a result, even while the GDP rate is plummeting.
Lastly, I'm totally open to the idea that someone will come along and explain to me why my idea for how the Fed should give everyone money is just not workable. If that happens, I'll be happy to have learned something useful. But it's definitely not clear to me, a priori, why it wouldn't work if it wouldn't.
Congress has this power, and can always use it. The fed doesn't have this power, and that's because a bunch of unelected bankers aren't supposed to be making political decisions about wealth distribution.
Read up on the difference between fiscal stimulus and monetary stimulus...it's impossible to have an intelligent discussion on this subject without knowing how those things differ.
The job of financing ventures should be done by private parties and the banking industry, not by government, but since they are too preoccupied chasing assets with cheap money they can't be bothered to.