Voters across Boston elected candidates to fill all 13 seats on City Council on Nov. 7, many of whom were reelected to their current positions. However, four new members will soon be sworn into office as the newly elected representatives from districts 3, 5, 6 and an at-large seat.

Stop Handgun Violence — a Massachusetts based gun control group — mailed campaign flyers fashioned as invitations Friday to President Donald Trump and nearly 300 members of the U.S. Congress, urging...