The three congressional powers are:
<span>Expressed powers, which are directly written in constitution
</span><span>Implied powers, which are not directly written in constituion but lies within the scope of influence and
</span>Inherited Powers, which is held by all governments.
These powers is placed in the hand of the Congress in order to create a balance of power between the Congress and the house.
<span>Some political scientists believe
"issue networks" are more prevalent than "iron triangles"
because there is an alliance of various interest groups and individuals who
unite in order to promote a single issue or agenda in a way that influences the
government policy. Issue networks can be either international or domestic in range
reliant on their shared goal.</span>