From their story:

In the letter, dated November 14, A123 said the October payment was the most recent disbursement it had received from the government, with an additional $115.8 million still outstanding on the grant.

Thune and Grassley have pressed the Energy Department for more details about its funding of A123 as the company has faltered.

“The Department of Energy needs to answer for why it appears to put federal grants on auto-pilot to the detriment of U.S. taxpayers,” the two senators said in a statement. “This can’t stand.”