Warbler said:

a·the·ism
ˈāTHēˌizəm/Submit
noun
noun: atheism
disbelief or lack of belief in the existence of God or gods.
synonyms: nonbelief, disbelief, unbelief, irreligion, skepticism, doubt, agnosticism; nihilism

ag·nos·tic
aɡˈnästik/Submit
noun
plural noun: agnostics
a person who believes that nothing is known or can be known of the existence or nature of God or of anything beyond material phenomena; a person who claims neither faith nor disbelief in God.
synonyms: skeptic, doubter, doubting Thomas, cynic; More

Dictionary definitions are one thing, cultural assumptions are another. Often people think an agnostic is someone on the fence who can be swayed one way or another. Which is why many just identify as aetheist - they’re not going to claim they know without a single doubt there is no God, but they’re not religious in any way and live life as if there almost definitely isn’t.

I hate labels either way. Once you say you’re one thing or another people start to assume things about your beliefs. In my mind, saying you’re atheist shouldn’t imply anything except that you’re not religious and don’t believe in God. But some people think as if it’s a religion itself.

As for the president asking citizens to pray, it’s obviously not a big deal, but it is one of the many ways religion has wrongfully ingrained itself in our government. So yeah, it’s not a big deal, but it’s not completely okay either.