Drug Importer Death Penalty Act of 1996 - Amends the Controlled Substances Import and Export Act to direct the court to sentence a person convicted of bringing into the United States a proscribed quantity of a mixture or substance containing a controlled substance in an amount the Attorney General has determined is equal to 100 usual dosage amounts to life imprisonment without possibility of release (or, if the defendant has violated such provision on more than one occasion and if certain requirements under the Federal criminal code are met, to death). Makes conforming amendments to the code.