In the lead-up to the 1968 Republican presidential primary, he endorsed New York Governor Nelson A. Rockefeller, saying that Americans would only support a candidate who took a clear position on Vietnam.
1968年共和党总统候选人初选筹备期间，他表态支持纽约州州长纳尔逊·洛克菲勒，称美国人只会支持对越南有明确立场的候选人。