B727 CREW WAS FORCED TO GAR AFTER THEY INFORMED TWR THEY WERE UNABLE TO ACCEPT A LAHSO CLRNC.

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ON APCH TO RWY 14R ORD. AFTER SWITCHING FROM APCH TO TWR FLT XXX WAS CLRED TO LAND RWY 14R HOLD SHORT OF RWY 9R; DUE TO TFC. I WAS THE CAPT AND NON FLYING CREW MEMBER. FO WAS THE PF. AROUND 1300 FT I ADVISED ORD TWR; UNABLE TO HOLD SHORT OF RWY 9R. WE WERE 2 1/2 MI BEHIND A B757; ENCOUNTERING LIGHT CHOP FROM WING VORTICES. FO ELECTED TO SLOW DOWN AND REMAIN 1 DOT ABOVE THE GS. APCH WAS FLOWN VREF +10-15 KTS. TWR QUESTIONED MY LNDG CLRNC AND I RESTATED. CTLR THEN SAID PREPARE FOR GAR. AROUND 500 FT TWR SAID 'ACR XXX CLRED TO LAND; HOLD SHORT OF RWY 9R.' I AGAIN STATED CLRED TO LAND; UNABLE TO HOLD SHORT RWY 9R. TWR SAID; 'GO AROUND; RWY HDG; MAINTAIN 4000 FT.' NORMAL GAR; THEN SWITCHED TO ORD DEP. I WAS ASKED THE NATURE OF THE GAR AND STATED TOO CLOSE TO B757; IN CHOP; AND DID NOT ACCEPT HOLD SHORT OF RWY 9R. HE SAID ROGER AND THEN HANDLED US FOR A QUICK VISUAL TO RWY 9R. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: WHEN THE CAPT INFORMED THE TWR THAT HE WOULD BE UNABLE TO HOLD SHORT; HE GOT NO RESPONSE FROM THEM. THE RPTR STATED IT WAS LIKE HE WAS 'BEING IGNORED.' THIS HAPPENED TWICE. WHEN HE WAS GIVEN FINAL LNDG CLRNC WITH THE HOLD SHORT; THE RPTR FURTHER STATED 'THE TWR CTLR SEEMED VERY PUT OUT WHEN SHE WAS TOLD A THIRD TIME THAT THEY WOULD BE UNABLE TO ACCEPT A LAND; HOLD SHORT CLRNC.' THE CREW SAID THEY DEFINITELY FELT THE GAR WAS PUNITIVE IN NATURE. THE CREW WAS ADVISED BY THE TWR THAT THEY WERE 2 1/2 MI BEHIND A B757. THEY WERE ABLE TO CONFIRM THE SPACING ON TCASII; SET TO THE 5 MI SCALE. THEY WERE GETTING MODERATE TURB AND ROLLING; UP TO 30 DEG BANK ANGLE; FROM THE WAKE OF THE B757. THIS REQUIRED THE CREW TO FLY HIGH ON THE GS AND ADD 15-20 KTS TO VREF SPD. THEY ALSO PLANNED TO LAND AFTER THE TOUCHDOWN POINT OF THE B757. THE CAPT WAS UNAWARE OF THE RWY LENGTH HE HAD AVAILABLE; BUT BEING HIGH; FASTER THAN NORMAL; AND HAVING A POTENTIAL TOUCHDOWN POINT 3000 FT FROM THE END OF THE RWY; WERE THE REASONS HE REFUSED THE HOLD SHORT CLRNC. THE CAPT ALSO STATED THAT THERE WAS A DISTR CAUSED BY THE ACFT LNDG ON RWY 9R. HE WAS CONCERNED WITH A MISSED APCH. WHERE DO YOU GO IF BOTH ACFT MAKE A MISSED APCH? THE CAPT DID NOT REMEMBER THE ACTUAL WIND BUT WAS SURE IT WAS A SLIGHT QUARTERING XWIND. THE RWY WAS DRY.