When a legislator say they will "look" at something, it means they don't intend to actually do anything about it but are simply attempting to pacify their constituents by promising something.
How many "constituents" of Issa's do you think actually care about Aaron Swartz? Do you think the San Diego/Orange County population have been running major protests for Swartz?
A) Worked with Aaron Swartz to fight SOPA,
B) Sits on the House Judiciary Committee, and
C) Has a history of hauling the Justice Department before Congress.
Rep. Zoe Lofgren and Rep. Jared Polis are also on the House Judiciary Committee, and could potentially lend bipartisan support to any investigation.