{{CongBio}} allows linking to the Bioguide, using parameter of subject.

Henry Clay's biography is at http://bioguide.congress.gov/scripts/biodisplay.pl?index=c000482,
So {{CongBio|c000482}} will return an external link to that biography:

{{CongBio2}} - For members from 1991–present. It has both BioGuide information and Washington Post voting record. This is preferred.

{{VoteSmart}}

{{Bioguide}} looks like this:
ފަންވަތް:Bioguide

{{Cleanup Congress Bio}} puts articles in the category, Category:Biographical Directory of the United States Congress cleanup.

Wikipedia:WikiProject U.S. Congress/Bioguide, a subpage of Project Congress, tracks how well information is imported from the Bioguide.