fight (something) through
To force the passage or acceptance of something, especially legislation, by an authoritative body such haste and pressure that the normal careful considerations of its implications are avoided. Riding a strong wave of pro-nationalist sentiment, the senator was able to fight a bill through congress that would criminalize public criticism of the government. After the scandal, the board of directors of the giant corporation fought a policy change through that would curtail the rights of employees around the country.
fight something through (something)
to force something through some sort of procedure or process; to railroad something through (something). The governor fought the bill through the legislature successfully. She fought through the bill successfully.