US President Joe Biden has arrived in Uvalde, Texas, to meet families and survivors of the mass shooting at Robb Elementary School, which killed 19 children and two teachers.
Public anger is growing over the police response to the shooting, with officers waiting in the hallway as children trapped with the shooter made desperate 911 calls.
On Friday, officials admitted that police had delayed entering the school for over 40 minutes because they did not believe it was still an 'active shooter' situation.
The US Justice Department has announced a Critical Incident Review to provide an independent account of law enforcement actions and responses during the shooting.
President Biden's visit comes days after 18-year-old Salvador Ramos shot his grandmother and then opened fire on a classroom of fourth-graders with a legally acquired AR-15 style assault rifle.
As the US surpasses 200 mass shootings since the beginning of 2022, there are new calls for gun control measures, although leading Republicans oppose tightening rules.
First Lady Jill Biden, a teacher herself, accompanied the president to a memorial at Robb Elementary School, where they were seen comforting the school's principal and wiping tears from beneath their sunglasses.
Protesters outside the local Sacred Heart church shouted 'Do something!' as the president walked out, to which he replied, 'We will.'
