"Only time will tell if North Korea is serious this time, and in the meantime, we must continue to apply maximum economic pressure," the release stated.
Ryan added the US government should not forget that it is dealing with a brutal regime that has deceived the United States in the past. Moreover, American policy on North Korea promoted by previous US presidents did not work out.
READ MORE: Trump Elevates N Korea to Level of US in Haste to Reach Deal With Kim — Pelosi
Still, Ryan expressed hope that Trump's initiative to meet Kim put both countries on a path of peace and stability in the region.
The highly anticipated meeting did not result in Kim's clear agreement to fully denuclearize. Trump, however, noted it was the beginning and indicated further dialogue will be happening with more negotiations, including a possible Kim's visit to the White House.