The phrase "a vigorous case to" is correct and usable in written English.
It can be used when arguing or advocating strongly for a particular position or action.
Example: "The lawyer presented a vigorous case to support her client's innocence during the trial."
Alternatives: "a strong argument for" or "a compelling case to".
In April, he stood beside British Prime Minister David Cameron to make a vigorous case for a vote by Britons to remain in the European Union.
Not surprisingly, both sides sought today to make a vigorous case that the outstanding ballots would most likely tend to be in their favor.
Mr. Ashcroft was heavily criticized in April when he allocated $1.8 million to keep the lawsuit going, instead of the $57 million the department's lawyers said they would need to mount a vigorous case.
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.
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.
The Obama administration intensified its defense of the president's strategy against Islamic State militants Sunday, with Secretary of Defense Ashton Carter making a vigorous case that the terrorist group can only be defeated if the Iraqis "develop the will to fight".
That is a large statement but probably correct, and the author certainly makes a vigorous case for it.
Brill makes a vigorous case against teachers' unions and conveys the epiphanies, setbacks and triumphs of a national reform movement.
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.
Mr. Bush's desire seemed muted, sometimes curiously so, as he kept his hands closer to himself, covered less physical ground and let his features go slack, as if he were musing out loud rather than making a vigorous case.
