Give two types of laws passed by Congress that changed or modified the principle of the Constitution.

Voting rights  15th (black men)  19th (women) are the two laws passed by Congress that changed or modified the principle of the Constitution.

Explanation:

The right to vote is also known as the suffrage in America.In America different group of people where prohibited to vote-like poor people ,Based on the Color of the people ,immigrants,It was in the year 1870 the 15 th Amendment was passed which enabled the African American men to vote.Almost after 50 Years the state and the congress ratified the 19th Amendment and it gave women the right to vote or the suffrage right