The arrival of the Biden administration and the potential for the COVID-19 pandemic to soon be under control have combined to give immigration reform advocates in Massachusetts hope that a long-term solution is within reach. U.S. Rep. Katherine Clark, a Melrose Democrat and senior leader in the House, convened a group on Monday to discuss the status of immigration in the United States and the efforts underway to build momentum for Congress to tackle reform. The House has passed legislation this year to give the so-called "Dreamers" — young immigrants in the country illegally who were brought here as children — and immigrant farmworkers a path to apply for permanent residence. In addition to convincing the Senate to take up those bills, Clark said Congress must take additional steps to create pathways to citizenship for 11 million undocumented immigrants, including high-skilled groups, and protect against exploitation in the workforce.