This bill significantly amends the Immigration and Nationality Act (INA) by expanding the definition of an aggravated felony . It specifically includes offenses related to driving while intoxicated, impaired, or under the influence of alcohol or controlled substances if such an offense results in the death or serious bodily injury of another person. This reclassification applies irrespective of whether the conviction is considered a misdemeanor or felony under federal, state, tribal, or local law. Furthermore, the bill amends the INA to establish that any non-citizen convicted of, or admitting to, these newly defined aggravated felony drunk driving offenses will be deemed inadmissible to the United States. The provisions of this act take effect immediately upon enactment and apply to actions taken on or after that date, even if the underlying criminal conviction occurred prior to the act's passage.