More broadly, support for Trump's deportation program has declined in recent months. Sunday's poll found that 51 percent of respondents disapprove of the program, while 49 percent approve. That marks a notable drop from a similar February poll, when 59 percent approved, and from 54 percent in a June poll.

Presidential approval ratings show Americans' views during each term. See what the latest polls rated Donald Trump and how it compares to past terms.

President Donald Trump has marked the six month mark of his second term in office by taking to his social media platform to promote his victories. But new polling shows his approval rating continues to slide,