WASHINGTON — Michael D. Cohen, President Trump’s personal lawyer, said on Tuesday that he was refusing to cooperate with House and Senate intelligence committee investigations into Russian election meddling. The move may prompt lawmakers to issue subpoenas, compelling him to provide documents, testimony or other records.

Mr. Cohen, a confidant of Mr. Trump who was also a spokesman during the campaign, called the requests “poorly phrased, overly broad and not capable of being answered.”

“To date, there has not been a single witness, document or piece of evidence linking me to this fake Russian conspiracy,” he said in a text message. “This is not surprising to me because there is none!” Mr. Cohen’s response was first reported by ABC News.

Mr. Cohen said he would comply with a subpoena should one be issued, “as I have nothing to hide.”

Separately, Boris Epshteyn, a Trump campaign surrogate who briefly served in the White House press office, said in a statement that he had also received a request from the House committee seeking information, a development first reported by CBS News.