Rabbi Chaim Goldzweig z"l, from Chicago, was one of the biggest experts in Kashrus and worked for the OU. My father (Rabbi Menachem Shmuel Dovid Halevi Raichik A"h) personally relied on him when it came to questions of Kashrus and consulted with him from time to time.

Rabbi Goldzweig was once in yechidus by the Rebbe, and the Rebbe told him that he should speak to N'Shei U'Bnos Chabad about Kashrus.

He said to the Rebbe, "Here (Crown Heights)?! To the N'shei U'Bnos Chabad, I have to speak about Kashrus?" And the Rebbe replied, "Yes, because the women don't know when to be meikel (lenient) and when to be machmir (strict). Sometimes, they are meikel when they shouldn't be, and machmir when they don't have to be".

- This Yechidus was told over to Rav Shimon Raichik from Rabbi Goldzweig, once on his visit to California.

(The above message is the content of what the Rebbe said, not word for word).