The phrase "a report declaring that" is correct and usable in written English.
It can be used when introducing the content or findings of a report that makes a specific declaration or statement.
Example: "The report declaring that climate change is accelerating has raised concerns among scientists and policymakers."
Alternatives: "a report stating that" or "a report announcing that".
He hired lawyers who, on March 27th, released a report declaring that he knew nothing about the plan and placing the blame on Kelly and Wildstein.
The Local Government Association, which represents councils in England, issued a report declaring that London would be "worst hit in a recession".
(The monitors later released a report declaring that the overall election climate, including the news coverage, had been free and fair throughout Belarus).
Congressional experts said the agreement cannot go up until the President issues his waiver, a report declaring that the free-emigration conditions have been met.
Last year, Amnesty International released a report declaring that indefinite stays in the SHUs amounts to torture (a sentiment that echoed Atul Gawande's "Hellhole," a 2009 article in the magazine).
Fox News became sympathetic to the effort and Priebus, then the chairman of the R.N.C., issued a report declaring that passing immigration reform was necessary for the survival of the Party.
Merely one month after the UN approved a resolution demanding "rapid, safe and unhindered aid access" in Syria, including across borders, a report declared that the situation "remains extremely challenging".
Kraft defended his quarterback when news of the allegations broke, but a few months later, when the results of a controversial N.F.L. report declared that Brady and the Patriots were culpable, he accepted the league commissioner Roger Goodell's punishment without a fight, saying, "I do have to respect the commissioner and believe he's doing what is in the best interest" of the league.
It was only two years ago that Razorfishs Digital Outlook Report declared that portals were back from the dead.
It practically begs for the label "Portrait of a Happy Family," coming as it does in the wake of a weekend report declaring that she and Jay Z are on the rocks.
Five years ago, the President's Cancer Panel issued a landmark report declaring that "the true burden of environmentally induced cancer has been grossly underestimated [and]...the American people--even before they are born--are bombarded continually with myriad combinations of these dangerous exposures".
