Here is a quote from the article:
Legislators from Texas, Washington, Minnesota, Illinois, and Massachusetts as well as the nation’s major environmental advocacy groups, have introduced a bill to end the use of coal tar asphalt sealants in the US.
Here is a link to the article:
http://fyi.uwex.edu/shwec/2012/03/13/congressional-action-would-ban-coal-tar-asphalt-sealants/
