Affordability means prices low enough you can pay them without pain. Economics teaches us prices are set by the interaction of supply and demand. When demand is high relative to supply, prices rise. When demand is less than supply, prices fall. That is Econ 101.
Recently we have stopped taking in illegal aliens (who increase demand) and began deporting them, voluntarily or otherwise (lowering demand). As this article points out, rents have declined as vacancies are slower to fill. Some 2.5 million mouths are no longer demanding food here, easing pressure on grocery prices.
The deportations have reduced the supply of labor, relative to demand. So wages have risen, especially in trucking and construction, fields which have employed many illegal aliens. Many of those now departed were receiving welfare, reducing pressures on government to increase spending.
For American citizens, the more illegal aliens we can squeeze out of our society, the more affordable life will be for those who remain. As noted below, who loses are the Democratic machine politicians in our big cities, slumlords, plus construction and trucking firms. Who wins? Everyone else. But don’t expect the losers to give up without a fight, as in Minnesota.