The phrase "act is established" is correct and usable in written English.
It can be used in legal or formal contexts to indicate that a particular law or regulation has been formally enacted or recognized.
Example: "Once the act is established, all citizens must comply with the new regulations set forth."
Alternatives: "law is enacted" or "statute is recognized".
A legal source at the Ecuador embassy claimed yesterday that the 1987 Act was established to stop a major threat such as terrorism or a nuclear threat.
The Saskatchewan Highway Act was established in 1922, in compliance with the 1919 Canadian highway act.
It's been 40 years since the Coastal Act was established to limit development, protect the environment and allow greatest possible public access.
The Oregon Medical Marijuana Act was established by Ballot Measure 67, a citizens' initiative, in November 1998, the same election as the referendum Measure 57.
PL 94-142, also known as the Education for All Handicapped Children Act (later renamed IDEA, Individuals with Disabilities Education Act), was established to aid states in protecting the rights and meeting the needs of children with disabilities.
The laws that govern the U.S. worker-employer relationship, like the Fair Labor Standards Act, were established during the New Deal era to protect workers against unfair and abusive labor practices.
On 19 June 2003, a further restructuring of the NATO military commands began as the Headquarters of the Supreme Allied Commander, Atlantic were abolished and a new command, Allied Command Transformation (ACT), was established in Norfolk, Virginia, United States, and the Supreme Headquarters Allied Powers Europe (SHAPE) became the Headquarters of Allied Command Operations (ACO).
Researchers at the University of Southern California are studying changes in levels of trace metals in water since the Clean Water Act was established in 1972.
