He was referring to his trip to the World Economic Forum in Davos, Switzerland (the WEF annual meeting) — departing the White House to attend meetings in Davos on Jan. 20–21, 2026.
On Jan. 20, 2026 at the White House — the gaggle occurred immediately before he departed the White House for Davos (video posted by the White House).
The phrase is vague and likely a misspeaking; there is no public evidence that "18–30 dollars in flux" is a standard economic measure. He may have meant billions or trillions flowing into the U.S. (e.g., tariff or investment inflows), but the remark as quoted is unclear and unsupported by data.
Some national economic indicators improved in 2025 (stock market gains, low unemployment) but others — such as high federal debt and mixed inflation/wage trends — complicate the claim. No single authoritative source supports the blanket statement that "the country has never done better."
He did not specify which "vices"; common interpretations would include crime, drug use or other social harms. Data are mixed: some crime categories fell in recent years while overdoses and certain violent crimes remained elevated — there is no clear, across‑the‑board decline matching his short statement.
No — retail gasoline nationwide averaged far above $1.99 during 2025. Local prices vary, but by late 2025/Jan 2026 national averages reported by AAA and EIA were well higher than $1.99; he likely referred to low regional pump prices in a few places or misspoke about the timeframe.
The line "I'm here to watch all the air" is unclear in plain meaning and likely a colloquial/misspoken phrase; there is no public definition tied to policy. It appears to be rhetorical — possibly meaning he will oversee or monitor all aspects of the trip or media coverage — but the exact intended meaning was not clarified.