u.s. immigration policies. he wants the 2020 census to include a question on the people's citizenship. he's blurring the line between patriotism and politics. we have the report. >> reporter: armored vehicles cooling into washington as the city prepares for president trump's independence day extravaganza which will feature those tanks parked at the lincoln memorial, military flyovers and a vip section for his political allies, but there are concerns about the price tag. trump tweeting the cost of our great salute to america tomorrow will be very little compared to what it is worth. we own the planes, we have the pilots, the airport is right next door. all we need is the fuel. we own the tanks and all. but that's not so. the washington post reports the national parks service will divert $2.5 million from entrance and recreation fees to