The phrase "has long stated" is correct and usable in written English.
It can be used to indicate that someone or something has consistently expressed a particular opinion or position over an extended period.
Example: "The organization has long stated its commitment to environmental sustainability."
Alternatives: "has consistently asserted" or "has repeatedly claimed".
"The government has long stated that we have no desire to be the world's jailer.
But they are not -- as conventional wisdom has long stated and as Vice President Dick Cheney discovered on his Mideast trip.
The Muslim Brotherhood has long stated its opposition to peace with Israel and has pledged to revoke the 1979 Egyptian-Israeli peace treaty if it comes into power.
The American Psychiatric Association's Diagnostic and Statistical Manual, or DSM, has long stated that a delusional disorder is characterized by "one or more nonbizarre delusions that persist for at least one month".
But Mr. Ramirez has long stated that his priority this year is to help the mayoral campaign of Mr. Ferrer, and that he did not step down from the Assembly seat he held for a decade only to run for elective office again.
He has long stated his ambition to move towards a more "Nordic model".
"As we have long stated, excess volatility and disorderly movements in exchange rates have adverse implications for economic and financial stability," the group said in a joint statement.
"I've long stated that I enjoy making money, and I enjoy giving it away," Pickens said in his Giving Pledge letter.
Secondly, we have long stated that LogicaCMG needs someone with successful outsourcing experience at the helm, to unlock the hidden value in the shares.
THE American armed forces have long stated that they do not keep track of how many people have been killed in the current conflict in Iraq and, furthermore, that determining such a number is impossible.
I also welcome the fact that Mike Garcia agrees with what many of us have long stated – that Fifa is incapable of reform or cultural change with its current leadership," she said.
