structural:expansion, stylistic:tone
Presidency

Presidents of both parties have increasingly filled the policymaking vacuum with expanded use of executive power, including executive orders in areas that had traditionally been handled through legislation. For example, Barack Obama effected major changes in immigration policy by issuing work permits to some undocumented workers, while Donald Trump issued several significant executive orders after taking office in 2017, along with undoing many of Obama's initiatives. As a result, policy in these areas is increasingly determined by executive preference, and is more easily changed after elections, rather than through more permanent legislative policy.