The policy is aimed at allowing passengers to carry pen knives, corkscrews with small blades and other small knives.

NPR: TSA Stands By Plan To Allow Small Knives On Planes

Airlines for America, the trade association representing the major U.S. airlines, said Monday that "additional discussion is warranted" before small knives are allowed on planes.

CNN: TSA chief faces critics, says new knife policy will stand

On Friday, the head of Delta Air Lines voiced his opposition to allowing small knives on planes in a letter to TSA Administrator John Pistole obtained by The Associated Press.

WSJ: NY Senator opposes plan to allow knives on planes