Among the civil service retirement issues addressed in bills introduced thus far in the 106th Congress are the correction of retirement coverage errors for federal employees assigned to the wrong retirement system; immediate eligibility for federal employees to participate in the Thrift Savings Plan (TSP); improved portability of pension benefits; and repeal of the temporary increase in employee retirement contributions that was mandated by the Balanced Budget Act of 1997. Other bills would expand TSP eligibility to include members of the armed services; improve pension coverage for temporary and part-time federal employees; and designate several categories of federal employees as law enforcement officers for purposes of determining their retirement benefits.