Safe Roads Enhancement Act of 2008 - Amends the Immigration and Nationality Act to include within the definition of "aggravated felony" a third conviction for driving while intoxicated (including any conviction for driving while under the influence of, or impaired by, alcohol or drugs), without regard to whether the conviction is classified as a misdemeanor or felony under state law.
Makes inadmissible or deportable an alien who has been convicted of driving while intoxicated (including any conviction for driving while under the influence of, or impaired by, alcohol or drugs), without regard to whether the conviction is classified as a misdemeanor or felony under state law, for which the term of imprisonment is at least one year.