PHOENIX -- The U.S. government may challenge Arizona's new immigration law, Attorney General Eric Holder said Tuesday as Arizona officials blamed the Feds for forcing the state into passing its own immigration enforcement mechanisms.

Attorney General Eric Holder told reporters on Tuesday that he fears the new law is subject to abuse. He said that the Justice Department and the Homeland Security Department are in the midst of conducting a review of the state law.

The attorney general said a number of options are under consideration including the possibility of a court challenge.

But it's the failure of the Obama administration to "secure our borders" that forced Arizona to pass the tough new law, Arizona Sen. John McCain said Tuesday.

Calling the situation in his state "the worst I've ever seen," McCain said drugs are pouring into the southwestern United States from Mexico because of ineffective border enforcement.

April 25: Thousands of protesters rally at the Arizona Capitol to fight a tough new state law targeting illegal immigrants.
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Arizona Republican Gov. Jan Brewer signed a bill Friday to give state police the authority to question whether an individual is in the United States legally and would consider it a crime for people to be unlawfully in the state. She said she was forced to act because Washington has failed to stop the flow of illegal immigrants and drugs from Mexico.