MISHNA BERURA YOMI MISHNA BERURA DIRSHU CHELEK 1 FEB 15 2011

S"A SIMAN 53 SIF 25 MISHNA BERURA SF KATAN 82
A person who uses the non-Jewish courts is unfit to be a prayer leader on Rosh Hashanah and Yom Kippur, unless he repented.

MISHNA BERURA DIRSHU CHELEK 1
Q:DOES THIS APPLY NOWADAYS

A: YES RAV CHAIM KINEVSKI SAYS IF YOU GO THERE SHELO KIDIN YOUR VADI PASUL(SEE NOTE 61)