Long-term work to prevent trafficking includes putting pressure on national governments to take the problem seriously. NGOs, at the local, national and international levels, can engage in lobbying for such changes as strengthening legislation against trafficking, the allocation of resources to combat trafficking, increased government spending on protection of and services for victims of trafficking and for government sponsored anti-trafficking campaigns. Effective lobbying requires specific strategies such as the need to clearly identify the desired change, to develop a plan of action and to gather support for the issue.