Eugene Scalia in the WSJ on EFCA, the misnamed card-check bill:

Never before has it been thought that eliminating the secret ballot reduces voter intimidation. In McIntyre v. Ohio Elections Commission (1995), a case about political pamphleteering, the Supreme Court called the secret ballot the "hard-won right to vote one's conscience without fear of retaliation." Indeed, EFCA'S lead sponsor in the House, Rep. George Miller (D., Calif.), previously joined 15 other colleagues in urging Mexico to recognize that "the secret ballot is absolutely necessary . . . to ensure that workers are not intimidated into voting for a union they might not otherwise choose."