evidence: The administration of former President Donald Trump obstructed an investigation looking into why officials withheld about $20 billion in hurricane relief for Puerto Rico following the devastating aftermath of Hurricane Maria in 2017, one of the deadliest U.S. natural disasters in over 100 years, a new report says. [...] The Office of Inspector General said its oversight authorities do not allow for a review or official opinion of actions taken by Trump administration officials. The Trump administration's OMB also insisted on overhauls to Puerto Rico’s property management records, suspension of its minimum wage on federal contracts and other prerequisites to access relief funds, according to the report. Some HUD officials worried such requirements were potentially beyond HUD’s authority to impose on grantees.