US HB2674

Amends the Homeland Security Act of 2002 to require the DHS Under Secretary for Science and Technology to evaluate existing federal research on climate change effects on homeland security, including impacts on emergency preparedness, disaster response, and federal funding structures for disaster declarations

Authorizes the Under Secretary to conduct research and development on approaches to mitigate negative climate change effects on homeland security, subject to available appropriations, with priority given to impacts on DHS operations

Requires consultation with other federal agencies, state/local/tribal governments, and critical infrastructure owners when carrying out climate change research activities

Mandates annual reports to Congress for four years on research and development activities, submitted to the House Homeland Security Committee, House Science Committee, and Senate Homeland Security and Governmental Affairs Committee

Defines climate change as detectable changes to climate system components attributed to human activity and alterations to the global atmosphere's composition