SEC says a cyber breach of a filing system it uses may have provided the basis for some illegal trading in 2016.
Facebook says it will release the Russia-backed, potentially illegal election ads that ran on its platform to congressional investigators.
Though the full scope of the investigation is not clear, the information requests make evident at least some of the areas that Mueller and his team of prosecutors intend to look into and also reveal a strong interest in certain of Trump's actions as president.
Maria hit the island Wednesday morning as a Category 4 storm with 155 mph winds, the strongest hurricane to hit Puerto Rico in over 80 years.
Both boat operators in the fatal crash that injured 10 people and left a child dead have been issued a citation for reckless or negligent operation.