John Kennedy actually said...

I'm more than happy to come to your country on my first visit as President of the United States, to one of our sister Republics in this hemi...

Mr. President, Mrs. Kennedy and I are delighted to be your guests and we are proud to be here among your people.

Liberty and economic progress go hand in hand, provided the people and the government together are committed to progress for the people.

The people of my country are committed to the progress of your people and this hemisphere.