An emergency ruling by a federal judge in California amounted to the broadest effort yet to halt the Trump administration’s overhaul of the federal government.

WASHINGTON (Reuters) - President Donald Trump's administration must temporarily halt its sweeping government overhaul because Congress did not authorize it to carry out large-scale staffing cuts and the restructuring of agencies,

The courts are poised to tackle broad separation-of-powers arguments against the Trump administration’s historic cuts to the federal workforce, after a federal judge said the president likely violated the US Constitution.