WATCH: White House Spars With Reporters Over $400 Million Cash Transfer to Iran

'Trust us there is nothing shady about a plane arriving in the middle of the night loaded with cash. Which is, you're saying, it is innuendo. Right?' CBS news reporter questions the White House press secretary.

Short transcript:

MARGARET BRENNAN, CBS NEWS: It would be easy for you to kill the argument [that there is anything suspicious about the payment] by saying this is exactly how it happened and why -- not just: Trust us there is nothing shady about a plane arriving in the middle of the night loaded with cash. Which is, you're saying it is innuendo. Right? You're saying nothing was done that was not above board. So why not?

JOSH EARNEST, OBAMA ADMINISTRATION: I guess the point that I'm trying to make is, we could not possibly have been more transparent about this arrangement than to have the president of the U.S. announce it to all of you on live national television on the day it took place. 

BRENNAN: The date the agreement was reached and the intent to pay to $1.7 billion, yes. But the details, you're saying this is a new detail on an old story. I guess, clarifying the detail is what would help--

EARNEST: But why is that relevant? Why is that relevant? Particularly when we all know there is no banking relationship between the U.S. and Iran, so again

BRENNAN: That is why there was a cash transfer--

EARNEST: I understand the political attacks that are being made by people who are trying to justify their opposition to the deal--

BRENNAN: At a minimum the $1.3 billion is taxpayer money? Don't people have a right to have an answer to that question? 

EARNEST: That's why we announced it back in January.

BRENNAN: But the details. The transfer was from the trust fund, to this bank, to this bank. Or it had to be in Euros and Francs because we don't have a banking relationship because it is complicated. That would be a really simple thing that people would be able to follow. 

EARNEST: None of what you have walked through changes the basic facts here. We acknowledged back on January 17 that there would be all kinds of innuendo hurled by people who oppose engagement with Iran... I recognize the details that you are trying to illicit might make for a colorful news story, but they don't change the facts.