Its focus was in Texas, but it was notable for being the first professional football league to place a franchise in Alaska.

Three of the original teams (Odessa, San Angelo and Corpus Christi) returned to the IFL, joined by new teams from Belton, Lake Charles, and Laredo.

Following the 2006 season, the Laredo Lobos left for AF2, but the league expanded with three new teams for 2007 in the Frisco Thunder, Katy Ruff Riders, and Alaska Wild (notable for being the first ever professional football team in the state of Alaska).

The league planned to add a team in El Paso for 2009.

[1] On July 22, 2008, it was announced that the IFL would be merging with United Indoor Football for the upcoming 2009 season, following the National Indoor Bowl Championship between both leagues' champions on August 2.