Question

Who can declare the acts of congress as unconstitutional

Answer 1

the judicial branch can declare laws passed by congress or executive acts by the president of the united states unconstitutional.

hope this helps, God bless!

Answer 2

Hey there!
When the founding fathers created the government, they certainly didn't want it to become like the tyranny they opposed. Therefore, they created the three branches of government- where the surprise court could declare congressional acts unconstitutional. Here's an example: if members of a certain party that has ideals that oppose the constitution fill the house or senate and pass unconstitutional laws, the supreme court can call them out.
Hope this helps!