U.S. Attorney General Alberto Gonzales came to Miami Monday to talk about the threat of nuclear terrorism worldwide — but ducked questions about whether he will keep his job and those about a new immigration judge scandal involving his Department of Justice.

Gonzales was the luncheon keynote speaker at the Global Initiative Nuclear Terrorism Law Enforcement Conference in Miami. Law enforcement officials from 36 countries are attending the weeklong conference, featuring speakers including FBI Director Robert Mueller and New York Police Commissioner Raymond Kelly.