Key Executive Orders and Actions:
Immigration and Border Security:
Trump has signed executive orders aimed at halting illegal entry, proposing mass deportation, and designating drug cartels as foreign terrorist organizations. He's invoked the Alien Enemies Act to address criminal networks, particularly at the southern border.

Environmental Policy:
He declared a "national energy emergency" to boost domestic energy production, including drilling in Alaska, and withdrew from the Paris Climate Agreement again. This move aims to undo many clean-energy policies from the previous administration, favoring fossil fuels.

Federal Workforce:
A significant restructuring of the federal workforce was initiated, offering deferred resignation to most federal employees with plans to transform the civil service into a leaner operation with more political loyalists. Actions include ending diversity, equity, and inclusion (DEI) initiatives and enforcing a return-to-office mandate for federal workers.

Military and Veterans:

Trump issued orders to ban transgender individuals from serving in the military and to end federal support for gender-transition care for those under 19. He also reinstated service members discharged under the previous administration's vaccine mandate.
Education and Cultural Issues:
Orders were signed to end what's referred to as "radical indoctrination" in schools, protect children from what they describe as "chemical and surgical mutilation" regarding transgender issues, and keep men out of women's sports.

Foreign Policy:

Trump paused nearly all U.S. foreign aid for 90 days for review, with exceptions for Israel, Egypt, and emergency food aid. He also announced plans to withdraw U.S. support from certain U.N. organizations.
Healthcare and Science:
There's been a pause on federal spending related to clean energy and environmental programs, including a mistaken halt on Medicaid payments. Scientific research has also been impacted with the halting of federal grant discussions and the pausing of external communications from health agencies like the CDC and NIH.

Legal and Political Reactions:
Many of Trump's executive actions have faced immediate legal challenges, with lawsuits filed against policies like ending birthright citizenship, restructuring USAID, and the mass firing of federal employees. 

There's been significant pushback from Democrats and various advocacy groups, with some Democrats considering delaying Trump's nominees as retaliation.

 
Public and political discourse has been polarized, with some viewing these actions as a restoration of traditional values and governance, while others see them as aggressive overreaches that threaten democratic norms and minority rights.

Broader Implications:
The actions taken by Trump in his early days back in office reflect a continuation of his first-term policies but with potentially more sweeping changes due to the Project 2025 blueprint, which many of his orders align with, despite his previous disavowals of the project.

These moves have implications for international relations, domestic policy, and the very structure of the U.S. government, potentially leading to a more centralized executive power.