New York legislators are headed to Washington, D.C. to call on Congress to pass federal voting legislation as the nation marks the anniversary of Dr. Martin Luther King Jr.’s “I Have a Dream” speech.

Rev. Al Sharpton will be joining state and local leaders at the march today as Republican lawmakers in Georgia, Florida and other states are attempting to tighten voting rules and making it difficult to challenge rules some perceive as discriminatory.

Georgia’s new voting law would make it illegal to offer water to people waiting in line to vote.

Advocates like the Director of Production for the National Action Network Katrina Jefferson says historically there have been attempts to suppress voting methods.

“Things like banning the ballot boxes and mail-in voting and reducing early voting days and hours,” Jefferson says.

Elite organizer for 51 for 51 Jamal Holtz says there are over 400 voter suppression laws across the United States that could stop Black and brown people from voting

The main march will be held in Washington, D.C., but other marches will be taking place in cities across the country including Phoenix, Miami and Atlanta.