Marco Rubio says over 600 visas were revoked in a month amid a US crackdown on birth tourism, while his “citizenship is not for sale” remark triggered debate over Trump’s Gold Card. Rubio Says US Citizenship Is Not For Sale Amid Visa Crackdown US Secretary of State Marco Rubio has said American citizenship is “not for sale” while announcing an intensified crackdown on birth tourism networks. According to Rubio, more than 600 visa