How many votes in his house does it take for a congressperson to be expelled?

In the U.S. House of Representatives, it takes a two-thirds majority vote to expel a congressperson. This means that if all 435 members are voting, at least 290 votes are needed for expulsion. The process is typically initiated through a resolution, and the vote is conducted openly. Expulsion is a serious action often reserved for severe misconduct.