I have since found corroboration for this story. It is almost definitely true. See this page for more details.
Fun On The Internet: This story appears to have been copied a lot from this page, ending up all over the web. You can tell if the copy came from here by the mis-spelling of the rep's name in the first paragraph (my original version said "Tim Moor") and by the not-so-common use of pairs of single quotes instead of double quotes.
Representative Tom Moore sponsored a resolution in the Texas House of Representatives in Austin, Texas calling on the House to commend Albert de Salvo for his unselfish service to ``his country, his state and his community.''
The resolution stated that ``this compassionate gentleman's dedication and devotion to his work has enabled the weak and the lonely throughout the nation to achieve and maintain a new degree of concern for their future. He has been officially recognized by the state of Massachusetts for his noted activities and unconventional techniques involving population control and applied psychology.''
The resolution was passed unanimously.
Representative Moore then revealed that he had only tabled the motion to show how the legislature passes bills and resolutions often without reading them or understanding what they say. Albert de Salvo was the Boston Strangler.