The Constitution exists to protect rights, not undermine them.

Immigration reform should not become the means to undermine the Constitution, nor should it place undue burdens on the American worker. Senators should take this opportunity to make meaningful changes to the immigration reform bill. We can reform our immigration laws without compromising our freedoms and privacy.

The president cannot use the pursuit of national security as a carte blanche to undermine the very freedoms that define America. This administration - like that of President Nixon - has apparently secretly adopted a legal view of the Executive Branch's power that is unbounded. A commitment to the Constitution and our laws demand an independent investigation.

It is clear that this illegal program violates our Constitution and laws governing surveillance. The president's false choice between securing our nation and preserving our Constitution must be rejected. Congress has an obligation to determine the truth, especially since the administration is unwilling to check itself. Hearings like this help ensure steps are taken so the rule of law is respected by all, even the president.

This country and our Constitution guarantee freedom of speech and association. Censorship at our borders is directly contrary to fundamental American values. Attempts to suppress freedom of speech and association are beneath our country - not to mention a waste of government resources intended to keep Americans safe.

We must protect women's access to the full range of reproductive health services. The 'Freedom of Choice Act' puts women's health and not politics first. Lawmakers should adopt this much-needed proposal.