John Kennedy actually said...

"We're glad to have you here."

"I want to express my welcome to all of you and to express strong support for this program of exchanges between the United States and between your countries."

"I want to express my thanks for all these generous presents and to welcome you to the White House."

"Nothing in this order shall be deemed to reduce, limit, or otherwise modify the authority or responsibility of the Attorney General to represent the legal interests of the United States."