Republican lawmakers in Illinois are calling for Sen. Roland Burris to resign after he acknowledged that he had conversations with allies of former Gov. Rod Blagojevich before Blagojevich named him to fill Barack Obama’s Senate seat. In one instance, Burris said Blagojevich’s brother had asked him for campaign donations. When questioned under oath last month, Burris failed to tell state lawmakers about these conversations. Some lawmakers are accusing Burris of committing perjury. Blagojevich was impeached and removed from office last month after he was accused of trying to sell Obama’s seat.