Kanazawa's paper exists in the context of warring societies, so looking at attitudes towards immigration may not plumb the depths of sentiment deeply enough, but it's not an implausible proxy.
Reuters/Ipsos administered a great poll--with a ternary "deport most/all", "allow most/all to stay" and the regrettable but necessary "unsure" cop-out--on the question of immigration in the US. To avoid confusing putative invaders with perceived relatives among chicanos and latinas living in the US and to steer clear of racial confounding more generally, only non-Hispanic whites are subsequently considered.
On two of three fronts, the polling data lend credence to Kanazawa's hypothesis.
One, men (66.3%-25.5% for "deporting most/all"-"allowing most/all to stay", respectively) are more likely to favor deportation than women (60.4%-28.7%).
Two, women aged 50 and older (69.1%-21.9%) are far more likely to favor deportation than women under 40 (44.9%-44.0%).
Three, however, causes some uncertainty. Men aged 50 and older (73.3%-21.0%) are similarly far more likely to favor deportation than men under 40 (49.1%-38.5%). Younger men are thus more xenophilic than older women. Age is a stronger predictor of xenophilia than sex is.
Heartiste anticipates this and offers a potential explanation:
Anecdotally, I have heard far more support for rapefugees, and more generally for open borders, from young White women than I have from any other group of people. (The men I know don’t bring it up, but a few of them, when forced into a conversation about it, hemmed and hawed or meekly cosigned their girlfriends’ opinions. Even the alphas are susceptible to this inglorious path of least resistance.)Interesting food for thought. Far, far too interesting to be discussed in the major media, of course.