The House is tying allegations that President Donald Trump tried to get Ukraine to interfere in the upcoming 2020 elections to its legal efforts to obtain grand jury material redacted from special counsel Robert Mueller’s report.

In a court filing made Monday night, days after House Speaker Nancy Pelosi announced the House is formally launching an impeachment inquiry into Trump, House attorneys pushed back against the Department of Justice’s previous assertions that it was unclear whether lawmakers were actually pursuing potential impeachment.