By bizn_fun 
Last week, Trump has said he will move to ban big corporate investors from buying single-family homes, in a bid to make housing more affordable for Americans. That pledge bolstered an idea that has been circulating for years, though some analysts question the extent to which a ban would affect prices.
Trump also recently directed Fannie Mae and Freddie Mac, the government-backed housing finance firms, to buy $200bn (£149.4bn) worth of mortgage bonds. The move, he claimed, would push down mortgage rates.
An increase in purchases could boost demand for the so-called mortgage-backed securities, which could in turn help lower mortgage rates for borrowers.
The average rate on a 30-year mortgage fell below 6% for the first time in nearly three years following his announcement – “and that’s not with the help of the Fed,” Trump said during a speech in Michigan this week, referring to the Federal Reserve. The Fed’s benchmark interest rate can indirectly affect mortgage rates.
Hassett on Friday promoted Trump’s move to order bond purchases. “We’ve seen a pretty big reaction to the announcement, and I think that actually makes us all feel better, because the truth is that fewer people are buying homes right now than we’ve seen pretty much in my lifetime,” he said.
But housing economists have cautioned that the bond purchases might not push mortgage rates substantially lower in the long run.
“The key now is the timing and cadence of these purchases, which will determine whether the impact is healthy or introduces volatility into the mortgage market,” said Jeff DerGurahian, head economist at loanDepot, a mortgage lender.