More than 20 members of the U.S. House, mostly Democrats, and Republican Sen. Ted Cruz will travel to South Africa to honor and commemorate former South African president and anti-apartheid leader Nelson Mandela.

House Speaker John Boehner tapped Rep. Aaron Schock, R-Illinois, to lead the official delegation of House members to South Africa for Tuesday’s service. Members of the Congressional Black Caucus, including Chairwoman Marcia Fudge, will join the official congressional delegation.

The group of 24 members of the House of Representatives and Senate will leave early Monday morning for the service Tuesday in Johannesburg at FNB Stadium.