It is unlikely to change many forecasts as the seat is currently regarded as safely Republican
Iowa Rep. Steve King introduced a joint resolution in January, 2017 that would consider only U.S. citizens when determining the number of congressional districts in each state
Don't like the results? Change the rules!
After gaining two seats in the 2016 election, Democrats will need to gain three more to control the Senate in 2019. It is a tall order given the composition of races next year.
Two House seats are vacant as a result of political appointees being confirmed. Additional vacancies may be forthcoming as President Trump's nominations are confirmed.