The phrase "ample justification to" is correct and usable in written English.
It can be used when discussing reasons or evidence that support a particular action or decision.
Example: "The research provided ample justification to implement the new policy in the organization."
Alternatives: "sufficient grounds to" or "adequate reason to".
It was an argument that gave Wal-Mart ample justification to end the inquiry.
But if Israel or the United States does strike to prevent Iran from getting nuclear weapons, it will have ample justification to do so.
Hansford, who has spoken to pilot unions about their concerns flying the Boeing plane, said Chinese authorities had ample justification to move first.
We think the presented evidence is clear and the judges have simply failed to further investigate the pattern of Aubrey de Grey's misconduct, even though we presented to them ample justification to do so.
A state audit committee has found ample justification to pursue its investigation of the Belmont Learning Center, according to a status report released Wednesday on the controversial high school.
This is ample justification to integrate reflexive self-examination into the MakCHS curricula.
Dr. Gerald Guest, director of the center of veterinary medicine, wrote that he and other scientists at the center had concluded there was "ample scientific justification" to require tests and a government review of each genetically engineered food before it was sold.
But equally important, if we allow police and national guardsmen, FBI, ICE, etc. to murder people with impunity, then there's ample justification for people to own and control assault weapons to protect against police-state tactics.
These debatable, sparse references to mutants being "bad" is seen as ample justification by many to persecute super-powered mutants.
The Bush administration — which has eviscerated many regulations for no good reason — has ample justification this time to revise a regulation in the interests of health care reform.
Critics argued that there was ample justification for the agency to apply its proposed assessment factors to that information, as well as to information submitted by third parties.
