Naturally- in the truest sense of the word- there is no institution of motherhood without the lack of birth control. Rather, tomorrow, I'm going to be celebrating the fact that my mother didn't use birth control. I'm also going to be celebrating the fact that I have two children to a great wife, by not using birth control. The last thing I'd ever think to celebrate about, or give thanks to, is birth control.
I could probably wax philosophical on the sanctimonious philsophy that is revealed by such a tweet, but it probably does better to note that I'll actually be celebrating my mom tomorrow, instead of a radical allegiance to a selfish individualism.
[Note: I'm not saying, like in Roman Catholicism, that birth control is inherently wrong. But I am saying it's ridiculous to give thanks to the Affordable Care Act for free birth control. On Mother's Day.]