Lyndon Johnson actually said...

"Well, we're mighty glad that you have had a safe return. We're all very proud of you, and we are looking forward to seeing you."

"We of the United States are honored, Mr. Prime Minister, that your flag and our flag fly together, side by side, in the efforts these times require to preserve the peace of the world."

"We are proud of them, and happy for the success of this peaceful adventure on mankind's newest frontier."

"I said you had a little trouble talking Ed back in from his walk the other day, do you think you might be able to persuade him to come up to see me this week if I can get down to Texas?"