In a report issued Wednesday, the State Department called out Bosnia, Belarus, Ukraine and particularly Poland for not having acted on restitution claims.
Croatia, Latvia and Russia were also taken to task in the report, which is likely to draw angry responses from the governments identified.
The report noted that Poland, which had the largest Jewish community in Europe before the outbreak of World War II, has not yet enacted comprehensive legislation on national property restitution or compensation covering Holocaust confiscations.
Only about half of 5,500 claims for Jewish communal property have been adjudicated and half of those were rejected, it said.
As the JUST Act report makes clear, Holocaust survivors and Jewish communities continue to wait for justice for property that was wrongfully taken from them, said Gideon Taylor, operations chairman of the World Jewish Restitution Organization.