The phrase "asserts the issue of" is correct and usable in written English.
It can be used when discussing or emphasizing a particular problem or topic in a formal context.
Example: "The author asserts the issue of climate change as a pressing concern that requires immediate action."
Alternatives: "highlights the matter of" or "addresses the topic of".
Perhaps it was to allow Mr. Obama to go on asserting that the issue of same-sex marriage should generally be left up to the states.
Despite their appreciation for the new curriculum design, the teachers asserted that the issue of time could be a barrier to the application of the designed curriculum.
All of this is why, here in the month of June, I defiantly assert that the issue of school segregation is of pressing concern all year long.
Scotland's deputy first minister Nicola Sturgeon, speaking on a BBC Scotland debate programme in January this year, asserted that on the issue of passports, people would have a choice, like in Ireland.
Finally, plaintiff asserts the submission of the issue of assumption of the risk to the jury violated the free exercise clause of the First Amendment.
Later in the Critique Kant enlarges on the issue of divisibility, asserting that, while each part generated by a sequence of divisions of an intuited whole is given with the whole, the sequence's incompletability prevents it from forming a whole; a fortiori no such sequence can be claimed to be actually infinite.
In a strongly worded letter, Mrs. Clinton asserted that the issue was "of great importance to me," that she held Corning in "high esteem" and that she considered the accusations against the company "unfair," according to a copy of the letter.
For instance, he wants to see better journalism emerge on the issue of climate change, asserting that views have been manipulated by an avalanche of lies coursing through the Internet.
Gov. George W. Bush sought to seize the offensive today on the issue of tax cuts, asserting that Vice President Al Gore's plan was so narrow and complicated that it would fail to lower taxes for many middle-class Americans.
In 1969, he made his first bid to unseat Mayor Yorty, who repeatedly raised the issue of race and asserted that Mr. Bradley was appealing for votes to blacks and "left-wing militants". At the same time, some militant blacks denounced Mr. Bradley as a "white man's candidate," and referred to him as Uncle Tom.
