WASHINGTON, June 11 -- Rep. Mike Thompson, D-California, issued the following news release: * * * THOMPSON, CLYBURN JOINED BY LEADER JEFFRIES TO REINTRODUCE LEGISLATION EXPANDING BACKGROUND CHECKS FOR GUN SALES * Washington - On Tuesday, Chairman of the House Gun Violence Prevention Task Force Rep. Mike Thompson (D-CA-04) and Rep. Jim Clyburn (D-SC-06) were joined by Democratic Leader Hakeem Jeffries and other members of the Gun Violence Prevention Task Force to announce legislation to close  more