Texas's 3rd congressional district of the United States House of Representatives is in the suburban areas north and northeast of Dallas.

It encompasses much of Collin County, including McKinney and Allen, as well as parts of Plano, Frisco, and Prosper.

The current seat dates from a mid-decade redistricting conducted before the 1966 elections after Texas's original 1960s map was thrown out by Wesberry v. Sanders.

It encompassed much of Collin County, including McKinney, Plano, and the majority of Frisco, as well as a portion of the city of Dallas.

His stated reason for retiring was that "the Lord has made clear that the season of my life in Congress is coming to an end".