Senator DeMint (R-SC) insisted that Senator McConnell object to the appointment of the House-Senate Conferees, thus preventing a Conference on the bill.
I believe this is false. Until the House advises the Senate that the differences between the bills can't be reconciled via amendment, the bill just sits in the House.
HR 3590, and a link to all congressional actions: http://thomas.loc.gov/cgi-bin/bdquery/z?d111:HR03590:@@@X
I know that Byron York's assertion that differences are usually resolved via conference is incorrect. Differences are usually resolved by ping-pong amendments. However, ping-pong amendments would not be appropriate for this sort of legislation, so his ultimate question, "Where's the call for a conference?" is sensible.