The phrase "ample proof that the" is correct and usable in written English.
It can be used when you want to indicate that there is sufficient evidence to support a claim or argument.
Example: "The study provided ample proof that the new treatment was effective in reducing symptoms."
Alternatives: "sufficient evidence that the" or "plenty of evidence that the".
Last week provided ample proof that the markets have more in common with "Alice in Wonderland" than the real world.
While there's ample proof that the government monitors the political causes I am involved with, I find myself increasingly concerned about the social consequences of corporate surveillance.
She offered ample proof that the Italian school of dance teaching had by no means died out with the earlier exodus of so many of its best practitioners to the French courts.
When The Inbetweeners Movie opened in the UK with a five-day tally of £13.22m, there was ample proof that the show's avid TV audience had a healthy and impatient desire to see the big-screen version.
But the huge number of black soldiers killed in action and the maltreatment of black prisoners of war was ample proof that the Vietcong and the NVA were simply manipulating the racial discord within the American ranks.
Yet, even if the walls of the Met's Bellows exhibit weren't festooned with quotations from the artist attesting to his ambition to fill his canvasses with the raw energies of life and finding them exemplified on the streets of New York, the paintings themselves provide ample proof that the city offered him a unique subject — one with which he wrangled mightily.
But there is now ample proof that these laws, enacted under Gov. Nelson Rockefeller, have not cut drug trafficking or addiction.
Prosecutors said they had ample proof that Vaccari knew the money was raised from bribes and kickbacks.
Few organizations are structured this way, despite ample proof that it is the best way to optimize talent and innovation.
She has said her experience in those posts provides ample proof that she is the best and most qualified candidate to represent California in Washington.
With the proliferation of no-doc mortgages, interest-only loans and a dizzying array of new financial instruments, there is ample proof that America remains in the broadest sense what Hezekiah Niles once described as "a nation of counterfeiters".
