Mitt Romney’s campaign sought today to explain some of the complexities of his financial trusts, following his claim in a debate last night that investments related to Fannie Mae and Freddie Mac were made without his knowledge. The trustee who manages Romney’s money said this morning that those investments were made through a charitable trust “operated on a totally blind basis” that Romney did not have control over. He also said that the investment related to Fannie Mae and Freddie Mac has been sold.