Excerpt from her article in The Atlantic:

Marco Rubio here, with an important announcement: No more Calibri in official State Department communications! Get out of here with your ungarnished lines and provocatively naked terminals! The Biden administration may have shot the serif*, switching from Times New Roman on the grounds that serif-less fonts such as Calibri are more accessible to readers with disabilities. That’s all over now.

* Emphasis mine. What a glorious pun.