The Federal Emergency Management Agency’s acting leader has adamantly defended the federal government’s response to historic flooding in Texas earlier this month, saying lawmakers’ attacks on the agency’s actions were unwarranted.

The acting administrator of the Federal Emergency Management Agency is pushing back on criticisms of the federal response to the central Texas floods that killed at least 136 people.

The head of FEMA’s Urban Search and Rescue branch, which runs a network of teams stationed across the country that can swiftly respond to natural disasters, resigned on Monday.