The phrase "asserts a first" is correct and usable in written English.
It can be used in contexts where someone is making a claim or stating a primary point or argument in a discussion or analysis.
Example: "In her paper, she asserts a first that challenges the conventional understanding of the topic."
Alternatives: "claims a primary" or "states a first".
The plaintiffs asserted a First Amendment "right of access" to FISC proceedings, but their claim was originally dismissed for lack of standing.
Noting that the mushroom program closely resembles the beef program,2 respondents amended their complaint to assert a First Amendment challenge to the use of the beef checkoff for promotional activity.
The Cliffords assert a First Amendment right to speak out and say they've done nothing wrong.
And because the information or records ordinarily could not incriminate the third party in criminal activity, the third party business cannot assert a Fifth Amendment privilege against production.
Paula Schanzle, an F.B.I. agent and the government's last witness, read excerpts from a deposition given by Thomas H. Bauer, an Andersen partner in Houston who has asserted a Fifth Amendment right against self-incrimination.
It merely provides the State and private parties with the driver's identity for, among other valid state needs, the study of causes of vehicle accidents and related purposes, always subject to the driver's right to assert a Fifth Amendment privilege concerning specific inquiries.
While reversing the Maryland court's ruling, Justice O'Connor's opinion indicated that parents could nonetheless assert a Fifth Amendment right if, after they complied with an order to produce their child, the Government then sought to use the information it obtained to prosecute a case.
However, Greyhound is consenting to the searches rather than trying to assert a Fourth Amendment challenge.
You have also been asserting a third myth: that Social Security and Medicare are responsible for the deficit and debt.
"I went to LAUSD schools and even back then they were crumbling". "Your toilets are as disgusting as your [graduation] success rate," asserted a third.
