US government spending just hit an all-time high as a % of GDP.

Not during wartime. Not during a financial crisis. Right now.

This matters for markets because:

1) Higher government spending = more Treasury issuance = more supply hitting bond markets

2) More debt = higher interest expense = even more borrowing (we're in the doom loop)

3) Crowding out private investment = slower productivity growth = lower real returns long-term

The "deficits don't matter" crowd has been winning the argument for 15 years. But physics eventually catches up. You can't borrow forever without consequences.

Watch the 10-year yield. Watch the dollar. Watch inflation expectations. The market will force discipline long before politicians do.