Updated at 11:45 a.m. with information from union spokesman Thomas Pinski.
Updated at 12 p.m. with statement from the White House.
Updated at 1:20 p.m. with comments from union president Gordon King and statement from Boeing.
The Obama administration has approved the sale of $30 billion worth of F-15 fighter jets to Saudi Arabia - a move that could mean new jobs at Boeing's defense plant in Hazelwood.
Senator Claire McCaskill says since the supercommittee failed to come to an agreement, Congress should follow through with the automatic budget cuts.
The $1.2 trillion in cuts would come from defense and non-defense spending, but would not affect Social Security or programs for low-income people such as Medicaid.
Already some Republican senators, including John McCain, have said Congress can reverse the cuts.
St. Louis Public Radio is a service of the University of Missouri-St. Louis.