In his executive orders, Trump repeatedly asserted that he can make and interpret law, alongside Congress and the courts.

In a flurry of unilateral executive actions, Mr. Trump revived disputed claims of broad presidential authority from his first term — and made some new ones. Court battles seem likely.

WASHINGTON (AP) — President Donald Trump is swiftly breaching the traditional boundaries of presidential power as he returns to the White House, bringing to bear a lifetime of bending the limits in courthouses, boardrooms and politics to forge an expansive view of his authority.