My "stronger claim" is my original claim, just rephrased, so don't pretend that I have moved any goalposts. These statements are in the Mueller report, as you can see for yourself.
https://www.justice.gov/archives/sco/file/1373816/download.
> The meeting was proposed to Donald Trump Jr. in an email from Robert
Goldstone, at the request of his then-client Emin Agalarov, the son of Russian real-estate developer
Aras Agalarov. Goldstone relayed to Trump Jr. that the “Crown prosecutor of Russia . . . offered
to provide the Trump Campaign with some official documents and information that would
incriminate Hillary and her dealings with Russia” as “part of Russia and its government’s support
for Mr. Trump.” Trump Jr. immediately responded that “if it’s what you say I love it,” and arranged
the meeting through a series of emails and telephone calls. (Page 110, under the heading "June 9, 2016 Meeting at Trump Tower.")
They are also not legally meaningless, and they aren't even my interpretation, which you would know if you had actually bothered to read the Mueller report or look up the relevant sections. Mueller himself said the reason why he did not prosecute is because (to him) it did not have sufficient evidence to prosecute. But just because the Justice Department wouldn't be able to convict doesn't mean that it is legal to accept information on a political opponent from an agent of a foreign government.
> On the facts here, the government would unlikely be able to prove beyond a reasonable
doubt that the June 9 meeting participants had general knowledge that their conduct was unlawful.
The investigation has not developed evidence that the participants in the meeting were familiar
with the foreign-contribution ban or the application of federal law to the relevant factual context. (Page 187 of the Mueller report.)
> The Office would also encounter difficulty proving beyond a reasonable doubt that the
value of the promised documents and information exceeds the $2,000 threshold for a criminal
violation, as well as the $25,000 threshold for felony punishment. (Page 188, ibid.)