[eluser]cideveloper[/eluser]
You do not need to add authentication to the view files. The controller will take care of this. The only aspect of auth that you would normally have in a view file is access control based on membership type. Lets say you had a menu in your view, and you only wanted certain links to show for administrators you would have code like this in you view.
Code:
<ul>
<li><a href="#">Link 1</a></li>
<li><a href="#">Link 2</a></li>
<?php if (is_admin()) : ?>
<li><a href="#">Link 1</a></li>
<?php endif; ?>
<li><a href="#">Link 3</a></li>
<li><a href="#">Link 4</a></li>
</ul>