They have to come up with another better lie.
Check it out:

After listening to excuses from IRS officials about why they cannot produce “lost” emails requested through a Judicial Watch Freedom of Information Act lawsuit, U.S. District Court Judge Emmet Sullivan has ordered the IRS to come up with a better explanation as to why the agency cannot produce valid documentation. He’s also asking for details about IRS hard drive destruction policy and wants verification from an outside source that IRS hard drives in question were in fact destroyed as officials have claimed.