Why is Senator Margaret Chase Smith addressing the U. S. Senate? To whom are the remarks delivered? Cite textual evidence to support your answer

The question is incomplete and the full version can be found online.  

As the title states, the remarks on this speech are delivered to the Senate and are meant to highlight the lack of action against Senator Joseph McCarthy (1908-1957) and his campaign of persecution and defamation against suspected communists.

Senator Margaret Chase Smith´s speech called all Senators to reject McCarthy´s tactics and honor their responsibility to do right by the American people.

Explanation:

The question refers to “Remarks to the Senate in Support of a Declaration of Conscience,” Senator Margaret Chase Smith´s “Declaration of Conscience” speech from the Senate floor, delivered on June 1st, 1950.

To compel her peers, she offers her perspective on the matter:

"As a United States Senator, I am not proud of the way in which the Senate has been made a publicity platform for irresponsible sensationalism. I am not proud of the reckless abandon in which unproved charges have been hurled from this side of the aisle."

She also warns that American people are "afraid to speak" and claims that no one should "be in danger of losing his reputation or livelihood merely because he happens to know someone who holds unpopular beliefs."

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