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The program has a built ‐ in fitting routine , which fits the data to a function . A problem remains when the group size decreases rapidly which results in members using SSRC sampling producing very inaccurate estimates of the group size . In summary , DHS / S & T agrees that a coordinated approach to the recovery process , which includes sampling activities , is needed among all Federal agencies . How much Plame , now retired from the agency , will reveal could be complicated by two factors : The CIA , which reviews the manuscripts of former agents and has reportedly become stricter about what it will permit , and next year 's scheduled trial of I. Libby Lewis , the former chief aide to Vice President Dick Cheney .