When the Houston Texans came into the league, the Nfl felt it was better to have them in the Afc South as opposed to the Nfc west, so the Seahawks agreed to move to the nfc in order to let Houston be in the Afc South without creating uneven divisions.
18 times through the beginning of the 2013 season.
The Houston Texans
No one ... there were 31 NFL teams when the Houston Texans joined in 2002. The 31st team, the Cleveland Browns, joined in 1999 and were placed in the AFC making 16 teams in the AFC and 15 in the NFC. When the Texans joined in 2002, they were placed in the AFC and the Seatte Seahawks moved to the NFC to even the conferences out at 16 teams each.
Houston Texans
The Houston Texans
J.J. Watt is number 99 on the Houston Texans.
Arian Foster is number 23 on the Houston Texans.
They have always been the Houston Texans. There were teams in Houston prior to the Texans, in the NFL (and AFL) the Houston Oiler (now the Tenneessee Titans). And in the USFL the Houston Gamblers.
The Houston Texans joined the NFL in 2002. They were an expansion team and were always based in Houston, TX.
Ricky Sapp is number 91 on the Houston Texans.
Duane Brown is number 76 on the Houston Texans.