The escalation in tensions comes as President Donald Trump seeks to use trade as leverage to strengthen border enforcement.

The Republican crusade against a fee that would impose penalties on oil and gas companies for planet-warming emission leaks ...

Maryland lawmakers are considering a new bill, HB1457, that could introduce a highway-use fee for drivers, replacing the ...

Congress has sent to President Donald Trump's desk a repeal of a fee on excess methane emissions from oil and gas production.