So why don't we make it illegal for politicians to lie? It seems much fairer. After all, corporations aren't allowed to put out misleading ads, so why should politicians?

It's a smaller harm if I buy diet products that don't work than if I vote for a politician who does the exact opposite of what he promised. Yet only the former is illegal.

Here we have Donald Trump's 'Contract with the American Voter': https://assets.donaldjtrump.com/_landings/contract/O-TRU-102.... How much of this did he accomplish?

> So why don't we make it illegal for politicians to lie?

Lying, especially when Politicians do it, isn't a binary. There are varying degrees of truth, deliberate omissions, and a difficult to discern intent. So it would be incredibly difficult to enforce.

So your only qualm is that it would be difficult to enforce? After all, this does not seem to be a problem with false marketing.

My qualm is that it would be impossible to enforce. And I don't really think that false marketing is as big of a problem as most people think because marketing tends to sell simulations, not promises of reality. When you see most advertisements, they're promising simulacrum: a hatchback filled with happy-looking, outdoorsy people; axe body spray being insatiable to women; someone actually drinking diet Pepsi (editorializing a bit on this last one). You don't need to make marketing claims if you just imitate the idealized form. This seems to echo many American politician's rhetoric: the entire Democratic field is representing an idealized form wherein their presidency could somehow overcome the blockade of the Senate.

In the United States, making it illegal for politicians to lie is usually regarded as inconsistent with the First Amendment.