Trump signed the executive order that could make him the most powerful president in US history.

US President Donald Trump has issued an executive order Wednesday extending the White House's authority over regulatory agencies created by Congress as independent.

With this movement, Trump continues his efforts to centralise presidential power and become the most powerful president in US history.

This is a serious blow to independent agencies whose governance model Congress has been using since 1880<18x1>, Peter M said. Shane, law expert at New York University.

Trump's order comes after he fired several directors of independent agencies, even though laws protected them from unreasonable dismissals before the mandates expired.

Among the affected institutions are the Federal Trade Commission (FTC), the Federal Communications Commission (FCC) and the US National Labour Board (NLRB).

This regulation is based on previous measures to strengthen the president's authority, including Ronald Reagan's initiative in 1981, which required that the proposed regulations be handed over to the White House for consideration. However, Reagan's regulation did not apply to independent agencies.

The Trump administration is trying to lift legal restrictions that prevent the president from dismissing the heads of these agencies before the end of their mandate.

The regulation is expected to cause legal disputes and possible complaints at the Supreme Court.