John Kennedy actually said...

"So we are glad to welcome you and to express appreciation to you on behalf of the country for your work in preserving these houses."

"We have a good many things in our country that are worth retaining."

"Mr. President, it is a source of great satisfaction to all of us to welcome you to the United States and to welcome your wife, the Foreign Minister, members of your government."

"We are very glad to have you here, Mr. President, so that you can see something of the United States."