RPTD EVASIVE ACTION TO AVOID LIGHT ACFT WHICH HAD DEPED OPPOSITE DIRECTION AND SUBSEQUENTLY TURNED IN FRONT OF RPTR'S ACFT.

Narrative

LBB APCH CTL DIRECTED ACR TO FAF ILS RWY 27 LBB. LBB TWR WAS EXPEDITING LIGHT ACFT OFF RWY AND AGAINST TFC. SAW A LIGHT ACFT TKOF INTO OUR ILS FLT PATH AND TURN CROSS WIND. THEN LOST SIGHT IN HAZE AND SETTING SUN. LBB TWR ENCOURAGED LIGHT ACFT TO CALL VISUAL SIGHT ON OUR ACR THEN CLRED SAME -- ON COURSE. THE LIGHT ACFT TURNED INTO OUR FLT PATH AND TCASII RA WARNED US TO MANEUVER. SAW LIGHT ACFT IN WINDSCREEN AND TURNED AWAY VISUALLY. THIS WAS A NEAR MIDAIR. NOW OUT OF STABILIZED APCH PARAMETERS WE WENT AROUND. A COMMON; TOO COMMON; PRACTICE OF ATC IS TO LIGHTEN WORKLOAD BY ENCOURAGING ACFT TO DECLARE VISUAL SIGHTING AND THEN CLR THEM TO ELECTRONICALLY BUZZ TCASII EQUIPPED ACR ACFT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED HE WAS THE PF AND REITERATED THAT HE FELT HE IS BEING ELECTRONICALLY BUZZED BY VFR ACFT AND IFR ACFT WHICH ARE USING VISUAL SEPARATION TO PROCEED ON CRS. THIS; HE INDICATED; CAUSES A REACTION BY THE TCASII REQUIRING SOME MANEUVER TO AVOID THE TFC. RPTR ALLEGES THE CTLRS DO NOT CONSIDER THE TCASII WHEN TFC IS IN PROX TO THESE ACFT AND THE POSSIBLE EVASIVE MANEUVERS REQUIRED BY THEM TO AVOID THE TFC. RPTR STATED HE DID NOT CALL THE FAC AFTER LNDG TO DISCUSS THE SIT AND STATED THE PROB IS WIDESPREAD AND NOT SPECIFICALLY WITH THIS FAC.