Extreme heat is the leading weather-related cause of death in the U.S., prompting the Department of Homeland Security to issue new guidelines for extreme temperature response plans. Though not enforceable, these guidelines are incentivized through grant programs, as noted by DHS Secretary Alejandro Mayorkas. President Biden doubled the funding for FEMA's Building Resilient Infrastructure and Communities initiative to $2.3 billion, aimed at reducing vulnerability to extreme temperatures.