Did a US government site just slap me with a modal popup offering to snatch my email address off me? Before I had a chance to see anything on the site? I absen

Did a US government site just slap me with a modal popup offering to snatch my email address off me? Before I had a chance to see anything on the site? I absentmindedly closed it immediately at first, and had to delete the site's cookies to check if I saw that right.