The album is the second installment in the band's anti-
George W. Bush trilogy, preceded by 2004's
Houses of the Molé and followed by 2007's
The Last Sucker. The title of the album is a parody of the 1972
ZZ Top album
Rio Grande Mud. Just like
Houses of the Molé,
Rio Grande Blood contains very political lyrics, making frequent allusions to the
George W. Bush administration. The second track makes an explicit reference to Bush as Señor Peligro, which translates to
"Mr. Danger" in Spanish. Some of the issues raised include the then-current
Iraq War, U.S. immigration policy and U.S. military policy (particularly the
United States Marine Corps in the song "Gangreen"). The
Halliburton corporation is also quoted and linked to the Bush administration. The album also contains allegations of the Bush administration complicity in the
September 11 attacks in the track "Lieslieslies," which contains audio samples from the conspiracy documentary series
Loose Change. The song received 6 nominations for
Best Metal Performance at the
49th Grammy Awards. A remix of the song "The Great Satan" from
Rantology appears on this album. Along with "LiesLiesLies", "The Great Satan" was also nominated for a Grammy. ==Track listing==