With some human rights advocates charging that Obama is risking a "Bush redux," current administration officials emphasized to the Times that the policies are still under review and that dramatic changes need to be balanced with national security interests.

"The president is very sympathetic to those who want to find out what happened," Gregory Craig, the top White House lawyer told the Times, referring to a court case the former administration buried. "But he is also mindful as president of the United States not to do anything that would undermine or weaken the institution of the presidency."

above link is to New York Times article.

Above text is from a ProPublica article.