Lyndon Johnson actually said...

So, as a small expression of our appreciation and as a token of our profound respect for your life and your labors, I should like to ask tho...

Now it is our turn and our privilege to greet you, Mr. President.

There is one man who is not here with us today who would especially be proud of this moment--John Fitzgerald Kennedy.

Mr. President, I am very happy and proud to welcome you to the United States.