The Supreme Court has cleared a path for the Trump administration to exclude undocumented immigrants from representation, potentially altering the balance of power in Congress for the next 10 years. The court Tuesday cut short the census count by two weeks, which census experts and civil rights advocates say risks producing a less accurate count. Then on Friday, the court said it would review President Trump’s efforts to omit unauthorized immigrants when apportioning congressional seats. That decision overturned a lower court’s order that had blocked the Commerce Department and Census Bureau from including information about the undocumented when they deliver...