An error was discovered in the processing of the race data on some ACS mail forms from 2000 to 2008. Responses on the mail questionnaire that checked only the "Samoan" box for the race question (with no other race reported) were erroneously changed to "don't know." In these cases, race was imputed as if the respondent had not provided an answer to the race question. We estimate that the national total for the Samoan population is underestimated by approximately 23,000 people (about 15 percent of the Samoan population) in the 2008 ACS tables and by a similar amount in the 2000-2007 ACS tables. Data collected via the telephone and personal visit modes are not affected. We will produce tables of the Samoan population from the corrected 2008 ACS data and update this errata notice with the link to the tables when they are available. Corrected 2008 data will appear in the 2009 ACS 1-year Comparison Profiles. Corrected 2008 data will also be used to produce the 2005-2009 ACS 5-year and 2007-2009 ACS 3-year data products as well as future multiyear products. We do not plan to rerelease any of the existing ACS 1-year or 3-year tables on American FactFinder, or any of the ACS PUMS files.