Here's why:
* It's a partial quote: The full phrase is "From sea to shining sea." By using only part of the phrase, you're referencing the well-known quote, and quotation marks signal that.
* It creates a sense of familiarity: Quotation marks help the recipient recognize the phrase and connect it to its patriotic meaning.
Here's an example of how you could use it:
> "Wishing you a happy birthday, from sea to shining..."
Let me know if you have any other questions!