The phrase "asserting as a" is not standard in written English and may lead to confusion.
It could be used in contexts where someone is claiming or stating something in a particular role or capacity, but it is better to use a clearer expression.
Example: "He is asserting as a leader in the community, advocating for change."
Alternatives: "claiming to be a" or "stating as a".
William Wan reports in the Washington Post today that Bo gave a statement asserting, as a source put it, that "he didn't meet Heywood and did not engage in anything with Heywood in recent years".
"We do not lightly tolerate a prosecutor asserting as a fact to the jury something known to be untrue or, at the very least, that the prosecution had very strong reason to doubt".
The Cornwall Alliance – a coalition whose list of signatories could double as a directory of major players in the religious right – has a produced a declaration asserting, as a matter of theology, that "there is no convincing scientific evidence that human contribution to greenhouse gases is causing dangerous global warming".
The second time, I'd gotten into a bit of a rut, asserting as a given that "We live in a time of great change".
Wages would stay high, he asserted, as long as there was a "safety valve" (i.e., cheap farmland) to draw off excess workers.
Still, Romney can't assert as a matter of fact that the president practiced political favoritism in this case.
"But the shareholder would be able to assert as a defense the co-op's failure to make the repair".
When they are asserted as a barrier to government action we are confronted by the necessity of balancing the asserted private right against the alleged public interest.
I'd like to assert, as a starting point, that women have played a crucial role in shaping modern British theatre.
There ends up being no real way to reliably know whether what is asserted as a well-known fact is really a much retold fiction.
For example, a manufacturer could successfully assert as a defense that it could not have known that the car would start chasing pedestrians on the sidewalk (possibly being "taught" bad driving habits by its owner).
