The phrase "advocate vigorously" is correct and usable in written English.
It can be used when expressing strong support or promotion of a cause, idea, or policy.
Example: "As a passionate environmentalist, I advocate vigorously for sustainable practices in our community."
Alternatives: "champion strongly" or "promote actively".
An attorney's job is to advocate vigorously for a client's interests.
The most socially minded physicians and psychologists who treat malnourished children, for example, will advocate vigorously with government agencies to provide food stamps, health insurance, housing and the like.
In his State of the Union speech next month, Obama needs to go before Congress and advocate vigorously for Employee Free Choice.
Mr Barak advocated vigorously, and has subsequently interpreted even more vigorously, provisions in these two laws that empower the courts to strike down legislation that contradicts them.
He launched his bid for president last year by branding Mexican immigrants as "rapists" and "killers", has advocated vigorously for a wall along the US-Mexico border, and just last month questioned the independence of an American judge over his Hispanic heritage.
Under the guidance of European Commission (EC), UK and Scotland, advocating vigorously developing renewable energy, EMEC has become an internationally famous authoritative testing and certification center for marine energy conversion devices.
Miller never forgot his debt to Nin, and advocated vigorously on behalf of her diaries.
President Obama has advocated vigorously for women in combat, and the goal is for the Armed Services to fully integrate women into all spheres by January 1 , 2016
However, two Democratic presidents, both saddled with similarly bad economies, didn't learn the lesson of Truman that advocating vigorously for workers' rights was a path to political victory, and they suffered staggering defeats.
More broadly, given that the rational basis test represents our constitutional default, one would expect to see restraint advocates vigorously criticizing it if they believed it to be excessively deferential.
His experiences with his own disorders, and important people in this life that suffer with Bipolar Disorder, and other forms of mental illness, have moved him to advocate more vigorously to work in many modes on behalf of those suffering from various forms of physical and mental illnesses.
