If you read the rest of that feed, it says the Carson campaign will stay in the race no matter what the results but that he was just going home for R&R.
The way I read Steve King’s tweets is that he took a tweet from a Chris Moody talking about what Carson was doing and then King twisted it into the idea that Carson was suspending, then he was probably quitting his campaign.
It may be politics, but it’s still a lie, white or not.