The phrase "as ample reason" is correct and usable in written English.
It can be used when you want to indicate that there is sufficient justification or rationale for a particular action or belief.
Example: "The evidence presented in the report provides as ample reason to reconsider our strategy moving forward."
Alternatives: "sufficient grounds" or "adequate justification".
While the case reports now believed to have been prepared by Mr. Hindi and others are more than three years old, American officials continue to describe their existence as providing ample reason for current alarm against the backdrop of separate but more general intelligence suggesting that Al Qaeda may be preparing to carry out a major attack soon in the United States.
It also keeps one of the most profitable franchises in modern commerce going, which is ample reason as well.
Fears are growing that the government will not be able to reach a deal with Brussels in time for a meaningful vote in parliament later this year – a prospect that could give Labour and Tory rebels in the Commons, as well as the Scottish National party, ample reason to vote it down.
It sounds as if Dwight Garner has ample reason to champion "Fargo Rock City," Chuck Klosterman's recent book about "hair metal" ("Fans' Notes," Sept. 2).
As far as ordinary people are concerned, history provides ample reason to shudder at the prospect of a higher consumption tax.
As a result, the government has ample reason to see Bitcoin not as a harmless tool for more egalitarian commerce, but as a threat to social stability.
More positive words were almost always reserved for Libya's neighbouring north African states, as Anderson explained: "There is ample reason for great optimism in Egypt and Tunisia.
But there is ample reason to conclude that it did harm as well as good.
From Ben Johnson to Barry Bonds, BALCO to Biogenesis, athletes have given us ample reason to assume that, as a rule, every accusation that appears in the press is true, as are many rumors that go unpublished.
There was ample reason for concern, as oil companies — including Eni of Italy, the largest energy producer in Libya — began to evacuate employees.
