The SEC voted to invite Texas A&M to join their ranks. But before the Home of the 12th Man can be the SEC's 13th member, they're going to have to go through Baylor. One contingency of the SEC's invitation is that there be no legal challenges or roadblocks stopping A&M or any team the SEC decides to invite. Baylor, however, has decided to mount a legal challenge.
It makes sense for Texas A&M to join the SEC, especially with the threat of Oklahoma and Texas joining the Pac-12. It makes sense for the SEC to invite A&M, who has quality programs in multiple sports, and would also help open the state of Texas to SEC recruiters.
Baylor's decision to try to stop this also makes sense. The Big XII is about to be ripped apart, and Baylor will likely be one of the leftovers remaining. They'll likely be invited to the Mountain West, which is respectable, but it's not the BCS. The money that bowl games and TV contracts give to BCS conferences is ridiculous, and that money gets divided evenly by all members of the conference.
To be blunt, Baylor's been getting paid big money thanks to the likes of Texas and Oklahoma. I know they want to keep that money coming, but the reality is that TV dollars now dictate conference alignment, not geography and tradition.