The phrase "a vigorous case for" is correct and usable in written English.
It can be used when advocating strongly for a particular argument, position, or idea.
Example: "The author presents a vigorous case for the importance of renewable energy in combating climate change."
Alternatives: "a strong argument for" or "a compelling case for".
That is a large statement but probably correct, and the author certainly makes a vigorous case for it.
Mr. McAuliffe and his Republican counterpart, Ed Gillespie, recently debated at Catholic University, making in part a vigorous case for why Catholics should vote for their parties.
Funding is difficult and neither club has dared even approach making a vigorous case for a shared stadium, for which both know there is a deal to be done.
Speaking at a news conference as BBC workers spilled out of their offices in one of the corporation's many buildings in west London, Mr. Grade made a vigorous case for the continued robustness and independence of the BBC, the world's largest noncommercial broadcasting company.
Mr. Davis, a Democrat elected to a second term only last fall, made a vigorous case for himself in a late-afternoon address at the University of California at Los Angeles that was carried live on several local television stations and cable news networks.
And in other domains, one could make a vigorous case for greater harmony and equality: in the increased participation of women in public life and men in family life, and in private relationships that are grounded in true reciprocity and respect because they do not rest on the subjugation of either party's interests and abilities.
And why, amid all the battles you've joined, and with all the energy you've been able to muster, haven't you made a more vigorous case for same-sex marriage, especially in light of your history on this issue?
Brill makes a vigorous case against teachers' unions and conveys the epiphanies, setbacks and triumphs of a national reform movement.
The timing of the two plays — both with the bases loaded and with two outs — prompted Sterling to do what homers do: make a vigorous, slightly shrill, case for his team, as if he was in court, arguing for Cano, don't you know?
Democratic political leaders say they are finally ready to mount a vigorous campaign arguing the case for reform.
The case presents to prosecutors a potential legal landmine, requiring them to balance a vigorous argument for conviction with preserving the constitutional rights of Miller against self-incrimination.
