What Pelosi does in this letter is rescind Trump’s invitation to speak in the House chamber during the shutdown and then suggest some alternatives he could pursue. The press is saying that she is “asking” to postpone the SOTU, but framing it as “asking” for a postponement is misleading because it wrongly implies Trump has power to say yes or no.

Speaker Pelosi reiterates potential security concerns of having State of the Union during shutdown.
— Bo Erickson (@BoKnowsNews) January 16, 2019
Asked by @GarrettHaake if POTUS should view this as a consequence, Pelosi says it is a “housekeeping matter” and suggests Trump could do it from the Oval pic.twitter.com/iDAzFStsXp