<prompt> Translate the following text to EnglishProfesa wa sheria wa Yale na mwanahistoria wa katiba Bruce Ackerman, akitoa ushahidi mbele ya Bunge la Wawakilishi mnamo Desemba, alisema kuwa Bunge jipya lililochaguliwa lina mamlaka kidogo ya kumhukumu afisa aliyepigwa marufuku na yule wa awali.  <response>: Yale law professor and quirky constitutional historian Bruce Ackerman, testifying before the House of Representatives in December, argued that a newly elected Congress has little authority to try an official who was impeached by the previous one. 