What is one thing that congressional members in the senate and the house of representatives have in common?

Legislative duties

Explanation:

The Senate and the House of Representative of the Congress both have the sole role of carrying out legislative responsibilities. Apart from this common role of legislation they are saddled with the responsibility of carrying out unique roles in the Federal Government.

There are no limits on the number of terms a member of Congress can serve.

Explanation:

While there are lot of differences, between the House of Representatives and Senate, when it comes to terms there are no limits on the number of terms a member of Congress, either the House of Representative or Senate members can serve.

However, though House of Representatives terms last two years before another election. Senate terms, in turn, last six years, with staggered elections held every two years.