WASHINGTON (AP) — Joe Biden is seeking to clarify his assertion that if the Senate subpoenas him to testify in President Donald Trump’s impeachment trial, he will defy the order. But he’s still not made it clear what he would do. In Iowa on Friday, the Democratic presidential contender told The Des Moines Register that he stood by his position that he would defy an order from the Republican-controlled Senate to be a witness in the proceedings.

On Saturday, he tweeted what he called a clarification. He said he’s always complied with lawful orders. Yet he also said any such subpoena would not, in his view, have “any legal basis.”