Senator Biden was saying, in effect, that if the Fifth Amendment were to be obeyed, the government could not afford to continue to take citizens' property without payment. Abolition of the Fifth Amendment has allowed the government to expand without regard to the rights of the citizens. These disguised violations of the Fifth Amendment are, for the most part well intended. Wetlands protection was originally established to reduce pollution of waterways. Billboard limitations are intended to beautify highways.
Rent control is described as keeping housing affordable for the poor.