In Comerio, a mountainous farming municipality in the central part of the U.S. territory, people say they have yet to see any aid from the government.
Dr. Khanna submits her letter of resignation after watching her co-workers getting manicures and pedicures in the middle of Puerto Rico's natural disaster crisis.
"We cannot keep FEMA, the Military & the First Responders... in Puerto Rico forever!" tweeted the President.
Several have died because of the inability to deliver oxygen, while others remain stranded at abandoned nursing homes.
The president's visit was carefully choreographed to avoid any embarrassing protests.
Protesters rallied at Trump Tower in Manhattan demanding the administration do more for Puerto Rico.