See this from Democracy Now. A brief Greenwald excerpt below. See the article for much more.
“Well, I mean, the problem here is that the context in which this is all taking place is that the Republicans have nominated this truly unstable, dangerous and often terrifying person who obviously should never get anywhere near the White House. And so, there seem to be a lot of people, including in journalism, who think that because that’s the case, the Democratic nominee, who has all kinds of flaws and vulnerabilities and ethical clouds surrounding her, should sort of get to waltz into the White House free of challenge or questioning, because somehow it’s our civic and moral duty to make sure that Donald Trump loses the election. And although I do think that Donald Trump getting anywhere near the White House is very dangerous, I also think it’s very dangerous to allow someone to gain extraordinary amounts of political power, even more than they already have, without being challenged or questioned by an adversarial media. The role of journalists should be to shine a light on both of them. And there’s a lot of light to be shined on what Bill and Hillary Clinton had been doing in terms of unifying private wealth and oligarchical financing and enormous amounts of political power in ways that blur every single conceivable ethical line.”
“And so, here you have Hillary Clinton and Bill Clinton having this Clinton Foundation, with billions of dollars pouring into it from some of the world’s worst tyrannies, like Saudi Arabia and the United Arab Emirates and Qatar and other Gulf states, other people who have all kinds of vested interests in the policies of the United States government. And at the same time, in many cases, both Bill and Hillary Clinton are being personally enriched by those same people, doing speeches, for many hundreds of thousands of dollars, in front of them, at the same time that she’s running the State Department, getting ready to run for president, and soon will be running the executive branch. And so, the primary defense of Democrats, which is, ‘Look, there is no proof of a quid pro quo. Yes, Hillary Clinton did things that benefited these donors, but you can’t prove that the reason she did them is because she got—the Clinton Foundation got this money or her husband got this money,’ this is an absurd standard. That has been the Republican argument for many years. Of course you can’t prove a quid pro quo, because you can’t get into the mind of somebody and show their motives. That was the argument of Antonin Scalia and John Roberts in Citizens United, and Anthony Kennedy. They said, ‘Look, you can’t prove that big money donations are corrupting. Maybe it creates an appearance of it, but you can’t prove it.'”