"Such poor leadership ability by the Mayor of San Juan, and others in Puerto Rico, who are not able to get their workers to help", Trump wrote on Twitter from his New Jersey golf club.
Mr Trump saidPuerto Rico was "totally unable" to handle the catastrophe on its own.
Both Long and another administration official, Office of Management and Budget Director Mick Mulvaney, renewed criticism Sunday of Cruz, saying she has not cooperated sufficiently with federal officials.
Cruz had told media on Friday that if Trump does not ramp up relief efforts, Puerto Rico could see "something close to a genocide". "I am begging, begging anyone that can hear us to save us from dying".
Mr Trump is set to visit the island on Tuesday. Members tell Newswatch 16 that collecting the items has been giving them peace of mind as they worry about their loved ones in Puerto Rico.
Celebs like John Legend and Lady Gaga took to Twitter to criticize the President and show their support for Puerto Rico. "We must do more", said Rep. Carlos Curbelo (R-FL), whose district covers the Florida Keys, which were devastated by Hurricane Irma.
"I'm in shock. I can't believe I'm not seeing more of a military response", Torres said.
"It was very painful being far away from them", she said.
Mayor Cruz said her goal was to save lives without getting distracted by anything else. Cruz says that "if he asks to meet with me, of course I would meet with him".
"When you are drinking from a creek, it's not a "good-news" story". It is unclear if he was praising first responders again or others in the US territory.
Elaine Duke made the comments upon landing in San Juan.
According to a release from the Pennsylvania National Guard, the crew and the helicopters will fly a number of missions over the next few days on the way to Puerto Rico.
Duke is likely to visit the US island territory to see the recovery effort next Tuesday, along with President Trump.
Penn State Wins Thriller Against Iowa With Time Expiring
How stinkin' good is Josey Jewell? The teams engaged in a sideout battle until Penn State took a 20-19 lead, its first of the set. The sophomore's passes early on seemed adrenaline-filled, a byproduct of the moment, and were initially too hot to handle.
Airport check-in delays caused by 'network issue'
Changi Airport has earlier issued an advisory saying that a technical issue was affecting the check-in systems of some airlines . Amadeus said in a statement that it had "experienced a network issue that caused disruption to some of our systems".
Trump says supplies streaming into storm-tossed Puerto Rico
It also was shipping a large generator to power a radar center to help air traffic control in San Juan and other airports. On a personal note, Rosas hopes to have confirmation soon for his trip to Puerto Rico, which is scheduled for Sunday.
Rohit ton lifts India
Jasprit Bumrah had nearly dropped that catch but to India's good fortune he managed to hold onto it while taking a tumble. Team India will aim to cap off another bilateral series in style as the lock horns with Australia in Nagpur .
Anthony Weiner sentenced to 21 months in prison
The prosecution called probation "inadequate" and asked for two years in prison (he faced up to 10 years for his guilty plea). Disgraced US congressman Anthony Weiner will spend almost two years in prison for sexting an underage girl.
Stokes suspended by England, puts Ashes spot in danger
The Sun newspaper published the footage from outside a nightclub in the southwest city of Bristol late on Wednesday. Dawid Malan has been added as cover to the squad for the Southampton match after Hales was ruled out.