Thanks to a months-long delay in the confirmation of President Obama's choice for budget director—caused by a hold on the nomination placed by a fellow Democrat—and also because of the disagreements over funding the government for 2011, Obama announced that his release of the fiscal year 2012 budget will be delayed by about a week.
Sen. Mary Landrieu (D-La.), had placed a hold on the nomination of Jacob Lew for budget director in protest over the administration's offshore oil drilling moratorium. The moratorium was lifted in October, but, according to the Washington Post, Landrieu continued the hold anyway, citing objections to the way permits were being issued. Lew was not confirmed until Nov. 18.
Currently the government is being funded by a continuing resolution (CR) rather than a budget, since Congress could not agree on a full appropriation bill. It abandoned the omnibus funding bill before Christmas and instead passed the continuing resolution, which will keep the government running till early March.