Ayn Rand, the anti-statist titan, was "read out" of the conservative movement in these pages by Whittaker Chambers for her views on religion and morality. Rand held "that man exists for his own sake, that the pursuit of his own happiness is his highest moral purpose, that he must not sacrifice himself to others, nor sacrifice others to himself." She even denounced the crucifixion as "the symbol of the sacrifice of the ideal to the nonideal." It's not hard to see why such views would not sit well at a magazine with a strong Catholic bent.
Rand’s Humanist bent is well known and grounds for a lot of conservatives rejecting her. I find that I can take the best of her ideas and leave the rest. She can be wrong about things too, but when she’s right, she’s RIGHT.