Washington (CNN) Former US Rep. Joe Walsh of Illinois said conservative lawyer George Conway, the husband of White House counselor Kellyanne Conway, is informally advising Walsh's 2020 campaign for the Republican presidential nomination, challenging Donald Trump for the presidency.

"I am honored to have his advice. I speak with him often. He's a wonderful adviser," Walsh said of Conway during an interview Saturday with CNN's Fredricka Whitfield. "As far as any formal role with our campaign, I would only be so lucky as to have somebody like George Conway involved."

Walsh did not say whether Conway would be formally joining his campaign.

Walsh, who voted for Trump in 2016, has also emerged as a denouncer of the Trump presidency and apologized for what he said was his role in helping elect an "unfit con man" to the White House.

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