NYT: “The lawyer, William J. Olson, … promot[ed] several extreme ideas to the president. Mr. Olson later conceded some of them could be regarded as tantamount to declaring ‘martial law’ and could even invite comparisons with Watergate. The plan included tampering with the Justice Department and firing the acting attorney general, according to the Dec. 28 memo by Mr. Olson, titled ‘Preserving Constitutional Order,‘ describing their discussions.”

Update: Here is a link to Olson’s letter.