According to the text, it can be deduced that

the Internal Revenue Service has now succeeded in getting back billions of the existing debt.

According to the text, it can be deduced that

today, the main source of wealth creation lies in the agricultural activities.

According to the text, it can be deduced that

never before has the US experienced such a profound crisis of faith in government.

A correct correspondence between pronoun and referent is expressed in

In relation to the text above, it can be said that

drug trafficking still lacks technological expertise, although it is getting more and more mobile.

In relation to the text above, it can be said that

big profits related to drug trafficking are strengthening border violence so as to make it more difficult to control.

In relation to the text above, it can be said that

transnational organizations have brought about a sudden increase in fierce deeds.

In relation to the text above, it can be said that

human smuggling and gang activity are considered nonprofitable commerce.

In relation to the text above, it can be said that

murderers, abduction and extortion can be mentioned as illicit actions associated with drug trade.

In relation to the text above, it can be said that

drug trade cartels get together to better control the effective commerce of four illegal addictive narcotic substances.