Trump extended the invitation Thursday to the foreign country as he faces impeachment over a similar request of the president of Ukraine and just months after Trump’s 2016 campaign was investigated over its ties to Russia officials.

Johnson told reporters Thursday it’s appropriate for Trump to seek help from other nations to determine whether criminal acts have been committed.

“I want to find out what happened during 2016,” he said after visiting a meeting of the Middleton Chamber of Commerce. “If there’s potential criminal activity, the president of the United States is our chief law enforcement officer. We have proper agreements with countries to investigate potential crimes so I don’t think there’s anything improper about doing that.”