The Supreme Court's decision on Tuesday lifted San Francisco-based U.S. District Judge Susan Illston's order in May that temporarily blocked large-scale federal layoffs while the case proceeded.

The Supreme Court has issued an order allowing the Trump administration to move ahead with its plans to slash the federal workforce.

However, the ruling by the court's 6-3 conservative majority contained exceptions, allowing federal judges to continue to issue sweeping rulings blocking key parts of the Republican president's agend...