To amend title 38, United States Code, to establish a presumption of service connection of amyotrophic lateral sclerosis for purposes of the laws administered by the Secretary of Veterans Affairs.

Presumes to be service-connected, and therefore compensable through veterans' disability compensation, amyotrophic lateral sclerosis developing a 10% degree of disability or more at any time, in the case of a veteran who served for 90 days or more during a period of war.