In November, the president signed the Justice Department appropriations bill, which included language from Sen. John Cornyn, Texas Republican, prohibiting federal agencies from facilitating the transfer of an operable firearm to an individual known or suspected to be in a drug cartel, unless they monitor the weapon at all times.

Now Mr. Obama is proposing to remove that provision from the 2013 spending bill, thus making it legal to revive gun-walking operations in the future. The White House justification is merely that the prohibition is “not necessary.”

Second, the budget pushes anti-Second Amendment policies.