Final answer:
Members of Congress are privileged from arrest during their attendance at the sessions of their respective houses, except in cases of treason, felony, or breach of the peace, according to the United States Constitution.
Step-by-step explanation:
Members of Congress are granted certain privileges, including protection from arrest, to ensure that they can effectively carry out their duties. According to Article I, Section 6 of the United States Constitution, Senators and Representatives are privileged from arrest during their attendance at the session of their respective houses and in going to and returning from the same, except in cases of treason, felony, or breach of the peace.
This privilege is aimed at preventing any interference or intimidation that may arise from external legal actions while legislators are engaged in their official duties. It allows them to function independently and without fear of legal repercussions for their legislative activities.