Seongnam, South Korea — South Korea is on the brink of electing a liberal president with distinctly different ideas from the Trump administration on how to deal with North Korea — potentially complicating efforts to punish Kim Jong Un’s regime.

He’s also a candidate who fears that the United States government has been acting to box him in on a controversial American missile defense system and circumvent South Korea’s democratic process.

“I don’t believe the U.S. has the intention (to influence our election) but I do have some reservations,” Moon Jae-in told The Washington Post in an interview.

Barring a major upset, Moon will become South Korea’s president on Tuesday, replacing Park Geun-hye, who was impeached in March and is now on trial for bribery. Because Park was dismissed from office, Moon immediately will become president if elected.

With Moon pledging to review the Park government’s decision to deploy the Terminal High Altitude Area Defense, or THAAD, antimissile system, the U.S. military has acted swiftly to get it up and running. This has sparked widespread criticism here the U.S. is trying to make it difficult, if not impossible, for Moon to reverse it.

The final components for THAAD were taken onto the site into the middle of the night last week, triggering protests, and the system became operational on Monday. It is designed to shoot down North Korean missiles but many in South Korea fear it will make them more of a target.

“It is not desirable for the (caretaker) South Korean government to deploy THAAD hastily at this politically sensitive time, with the presidential election approaching, and without going through the democratic process, an environmental assessment or a public hearing,” Moon said.

“Would it happen this way in the United States? Could the administration make a unilateral decision without following democratic procedures, without ratification or agreement by Congress?”