CAPT OF EMJ CONTINUES AN ILS APCH TO PIA WITH EXCESSIVE TAILWINDS DESPITE PROMPTING OF ANOTHER RWY USE BY FO ON FINAL APCH.

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INBOUND TO PIA; ATIS RPTED 900 FT CEILING; 15 KT XWIND; ILS RWY 13 IN USE; ILS RWY 4 OTS. SWITCHING TO TWR AT OM; TWR ASKED IF WE WOULD LIKE A CIRCLE-TO-LAND AND RPTED NEW WINDS OF 25 KTS GUSTING TO 30 KTS. I REPLIED; 'WE NEED 1000 FT TO CIRCLE; AND REQUESTED WINDS AGAIN. WINDS WERE SAME; BUT WE HAD RWY IN SIGHT AND STILL ABOVE 1000 FT AGL SO I REQUESTED A VISUAL TO ANOTHER RWY. TWR REPLIED HE COULD NOT ISSUE VISUAL BECAUSE WX WAS BELOW HIS MINIMUMS. I ASKED CAPT WHAT DO YOU WANT TO DO: HE REPLIED IM LNDG. I HURRIED THROUGH BEFORE LNDG CHKLIST AND AGAIN STATED; 'YOU HAVE A 22 KT TAILWIND.' HIS REPLY WAS 'LNDG.' WE LANDED WITHOUT INCIDENT. THE COMPANY FLT BEHIND US DIVERTED. I STILL FEEL SAFETY WAS JEOPARDIZED AND THIS PROB NEEDS ATTN. OTHER CONTRIBUTING FACTORS WERE NOT BEING CONFIGURED PRIOR TO FAF KEPT ME BUSY CONFIGURING; RUNNING CHKLIST; AND DISCUSSING WITH TWR AND CAPT ABOUT OPTIONS WHEN I SHOULD HAVE BEEN ADAMANT ON A GAR. 'LN' 4 SHOULD READ; '25 KTS GUSTING TO 30 KTS FROM 300 DEGS (TAILWIND).