WARSAW, Poland -- Polish and U.S. officials are engaged in intense talks to determine the fate of a sensitive object: a barracks that once housed doomed prisoners at the Nazis' Auschwitz death camp and is now on display at the United States Holocaust Memorial Museum.

Poland is demanding the return of the artifact, which has been on loan to the Washington museum for more than 20 years and is an important part of its permanent exhibition. But the museum is resisting the demand, saying the barracks shouldn't be moved, partly because it is too fragile.

"Due to the barrack's size and the complexity of its installation, removing and transporting it to Poland presents special difficulties, including potentially damaging the artifact," the museum said in a statement. "Both the Museum and our Polish partners have been actively discussing various proposals, and we remain committed to continue working with them to resolve this matter."

The issue has arisen because of a Polish law aimed at safeguarding a cultural heritage ravaged by past wars, particularly World War II. Under the law, passed in 2003, any historic object on loan abroad must return to Poland every five years for inspection. While Poland appears open to renewing the loan, it says the barracks must return -- at least temporarily.

Because of the rule, the U.S. museum in recent years has already returned thousands of objects dating to the Holocaust, including suitcases, shoes and prosthetic limbs, often in exchange for new, temporary loans of similar or identical items.

The barracks on view in Washington are, in fact, just half of a wooden building where prisoners slept in cramped, filthy and often freezing conditions as they awaited extermination, often in gas chambers. The other half still stands at Birkenau, a part of the vast Auschwitz-Birkenau complex.

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