They need the warrant so that the citizen is sure that they are police, and because without one, it would technically be trespassing.
6 different benefits
Clutter-free Life. ...
Cheaper Living. ...
The Ability to Live and Visit Anywhere. ...
It's Easy to Stay in Touch. ...
Discover New Cultures. ...
A Cohesive Family Unit.
Industrial Production Increased
During the early 1800s the U.S. government adopted policies aimed at acculturating and assimilating Indians into European-American society. The policy of assimilation was an attempt to destroy traditional Indian cultural identities.