Alex Ossola

Wall Street firms and other institutional investors have bought up hundreds of thousands of homes in the U.S.

that they rent out.

That's a tiny slice of the overall housing market.

But some housing analysts say it leaves fewer homes for sale and drives up prices in some neighborhoods, even as the country faces a lack of affordable housing.

The president asked Congress to codify a ban.

It's not clear he could ban such sales himself without congressional approval.

Turning to Venezuela, Trump is tightening his grip on the country's oil industry.

This morning, you heard about the administration saying Venezuela intends to give the U.S.

up to 50 million barrels of sanctioned oil.

That's as much as 15 percent of the country's output.

And now the White House says the U.S.

will sell Venezuela's oil indefinitely.

An administration official says the U.S.

is rolling back some sanctions so Venezuelan crude can be sold to global markets.

Meanwhile, the U.S.

also seized two more oil tankers, in the Atlantic and near the Caribbean, as it cracks down on Venezuela's oil exports.

U.S.

Energy Secretary Chris Wright says the administration is using oil to pressure Venezuela's government, in comments at a conference today filmed by CNBC.

For more on the Trump administration's plans for Venezuelan oil, I'm joined now by senior video correspondent Shelby Holliday.

Shelby, let's start with these oil tankers.