Sure - he should be forced to divest and put funds in a blind trust, but impeached, no.
@ND - more than half the country (popular vote) voted democrat. So no, the majority of the country is not republican, or center right, but the Republicans have done a nice job with getting public power despite only getting a minority of the votes through good district maps.
Further, your article is poor evidence. The more liberal California has over 12% of the US population, but only 120 seats in its state legislature, or about 1.6% of the state legislative seats in the country. Similarly, the more liberal New York has a little over 6% of the population and just 150 seats in its state legislature, or 2% state legislative seats in the country. Just because some more conservative states have more state legislature positions per person does not mean they represent the majority - math doesn't work there. If California and New York decided to have a number of state legislative seats in representative of the percentage of the state's population in the country, there would be more democratic state representatives than republican. The measurement here is contrived to inaccurately represent the majority of the population because it gives greater weight to rural states with smaller populations and larger numbers of state representatives per person (somewhat ironically given the conservative platform of smaller government). Proper measures of representation show that conservative views are a minority position. This is true to an even more extreme extent if you consider the views of those too young to vote or those that could vote but fail to do so, as they tend to embrace more liberal positions but are not given a say in elections.